Finding the Fourth Proportional to 123,425.52, 170,264.52 and 72,404.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,425.52 : 170,264.52 = 72,404.88 : x
2. Step 2: Convert to fraction form
   123,425.52/170,264.52 = 72,404.88/x
3. Step 3: Cross multiply
   123,425.52x = 170,264.52 × 72,404.88
4. Step 4: Simplify right side
   123,425.52x = 12,327,982,138.86
5. Step 5: Solve for x
   x = 12,327,982,138.86/123,425.52
6. Step 6: Final answer
   x = 99,881.95