Finding the Fourth Proportional to 113,669.33, 156,872.63 and 62,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,669.33 : 156,872.63 = 62,686.72 : x
2. Step 2: Convert to fraction form
   113,669.33/156,872.63 = 62,686.72/x
3. Step 3: Cross multiply
   113,669.33x = 156,872.63 × 62,686.72
4. Step 4: Simplify right side
   113,669.33x = 9,833,829,926.86
5. Step 5: Solve for x
   x = 9,833,829,926.86/113,669.33
6. Step 6: Final answer
   x = 86,512.60