Finding the Fourth Proportional to 82,677.72, 114,147.90 and 54,432.12

Step by Step Solution

1. Step 1: Write the proportion equation
   82,677.72 : 114,147.90 = 54,432.12 : x
2. Step 2: Convert to fraction form
   82,677.72/114,147.90 = 54,432.12/x
3. Step 3: Cross multiply
   82,677.72x = 114,147.90 × 54,432.12
4. Step 4: Simplify right side
   82,677.72x = 6,213,312,190.55
5. Step 5: Solve for x
   x = 6,213,312,190.55/82,677.72
6. Step 6: Final answer
   x = 75,150.99