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Finding the Fourth Proportional to 247,128.76, 370,560.30 and 78,603.40

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Solution

The fourth proportional to 247,128.76, 370,560.30 and 78,603.40 is: 117,862.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,128.76 : 370,560.30 = 78,603.40 : x
  2. Step 2: Convert to fraction form
    247,128.76/370,560.30 = 78,603.40/x
  3. Step 3: Cross multiply
    247,128.76x = 370,560.30 × 78,603.40
  4. Step 4: Simplify right side
    247,128.76x = 29,127,299,485.02
  5. Step 5: Solve for x
    x = 29,127,299,485.02/247,128.76
  6. Step 6: Final answer
    x = 117,862.85

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