Finding the Fourth Proportional to 77,500.08, 106,922.55 and 50,658.12

Step by Step Solution

1. Step 1: Write the proportion equation
   77,500.08 : 106,922.55 = 50,658.12 : x
2. Step 2: Convert to fraction form
   77,500.08/106,922.55 = 50,658.12/x
3. Step 3: Cross multiply
   77,500.08x = 106,922.55 × 50,658.12
4. Step 4: Simplify right side
   77,500.08x = 5,416,495,368.61
5. Step 5: Solve for x
   x = 5,416,495,368.61/77,500.08
6. Step 6: Final answer
   x = 69,890.19