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Finding the Fourth Proportional to 78,609,978.21, 108,480,316.86 and 42,846,727.17

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Solution

The fourth proportional to 78,609,978.21, 108,480,316.86 and 42,846,727.17 is: 59,127,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,609,978.21 : 108,480,316.86 = 42,846,727.17 : x
  2. Step 2: Convert to fraction form
    78,609,978.21/108,480,316.86 = 42,846,727.17/x
  3. Step 3: Cross multiply
    78,609,978.21x = 108,480,316.86 × 42,846,727.17
  4. Step 4: Simplify right side
    78,609,978.21x = 4,648,026,539,815,571
  5. Step 5: Solve for x
    x = 4,648,026,539,815,571/78,609,978.21
  6. Step 6: Final answer
    x = 59,127,691.49

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