Finding the Fourth Proportional to 102,780.16, 141,828.78 and 62,488.34

Step by Step Solution

1. Step 1: Write the proportion equation
   102,780.16 : 141,828.78 = 62,488.34 : x
2. Step 2: Convert to fraction form
   102,780.16/141,828.78 = 62,488.34/x
3. Step 3: Cross multiply
   102,780.16x = 141,828.78 × 62,488.34
4. Step 4: Simplify right side
   102,780.16x = 8,862,645,026.43
5. Step 5: Solve for x
   x = 8,862,645,026.43/102,780.16
6. Step 6: Final answer
   x = 86,229.14