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Finding the Fourth Proportional to 78,396.66, 108,188.15 and 42,587.37

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Solution

The fourth proportional to 78,396.66, 108,188.15 and 42,587.37 is: 58,770.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,396.66 : 108,188.15 = 42,587.37 : x
  2. Step 2: Convert to fraction form
    78,396.66/108,188.15 = 42,587.37/x
  3. Step 3: Cross multiply
    78,396.66x = 108,188.15 × 42,587.37
  4. Step 4: Simplify right side
    78,396.66x = 4,607,448,560.73
  5. Step 5: Solve for x
    x = 4,607,448,560.73/78,396.66
  6. Step 6: Final answer
    x = 58,770.98

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