Finding the Fourth Proportional to 149,385.55, 206,152.82 and 81,403.27

Step by Step Solution

1. Step 1: Write the proportion equation
   149,385.55 : 206,152.82 = 81,403.27 : x
2. Step 2: Convert to fraction form
   149,385.55/206,152.82 = 81,403.27/x
3. Step 3: Cross multiply
   149,385.55x = 206,152.82 × 81,403.27
4. Step 4: Simplify right side
   149,385.55x = 16,781,513,667.72
5. Step 5: Solve for x
   x = 16,781,513,667.72/149,385.55
6. Step 6: Final answer
   x = 112,336.93