Finding the Fourth Proportional to 118,100.50, 163,270.29 and 113,143.30

Step by Step Solution

1. Step 1: Write the proportion equation
   118,100.50 : 163,270.29 = 113,143.30 : x
2. Step 2: Convert to fraction form
   118,100.50/163,270.29 = 113,143.30/x
3. Step 3: Cross multiply
   118,100.50x = 163,270.29 × 113,143.30
4. Step 4: Simplify right side
   118,100.50x = 18,472,939,402.56
5. Step 5: Solve for x
   x = 18,472,939,402.56/118,100.50
6. Step 6: Final answer
   x = 156,417.11