Finding the Fourth Proportional to 113,443.06, 156,549.90 and 63,142.06

Step by Step Solution

1. Step 1: Write the proportion equation
   113,443.06 : 156,549.90 = 63,142.06 : x
2. Step 2: Convert to fraction form
   113,443.06/156,549.90 = 63,142.06/x
3. Step 3: Cross multiply
   113,443.06x = 156,549.90 × 63,142.06
4. Step 4: Simplify right side
   113,443.06x = 9,884,883,178.79
5. Step 5: Solve for x
   x = 9,884,883,178.79/113,443.06
6. Step 6: Final answer
   x = 87,135.20