Finding the Fourth Proportional to 139,088.52, 208,580.40 and 50,320.08

Step by Step Solution

1. Step 1: Write the proportion equation
   139,088.52 : 208,580.40 = 50,320.08 : x
2. Step 2: Convert to fraction form
   139,088.52/208,580.40 = 50,320.08/x
3. Step 3: Cross multiply
   139,088.52x = 208,580.40 × 50,320.08
4. Step 4: Simplify right side
   139,088.52x = 10,495,782,414.43
5. Step 5: Solve for x
   x = 10,495,782,414.43/139,088.52
6. Step 6: Final answer
   x = 75,461.17