Finding the Fourth Proportional to 113,487.89, 156,613.70 and 63,186.89

Step by Step Solution

1. Step 1: Write the proportion equation
   113,487.89 : 156,613.70 = 63,186.89 : x
2. Step 2: Convert to fraction form
   113,487.89/156,613.70 = 63,186.89/x
3. Step 3: Cross multiply
   113,487.89x = 156,613.70 × 63,186.89
4. Step 4: Simplify right side
   113,487.89x = 9,895,932,009.29
5. Step 5: Solve for x
   x = 9,895,932,009.29/113,487.89
6. Step 6: Final answer
   x = 87,198.14