Finding the Fourth Proportional to 139,090.30, 208,543.26 and 50,332.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,090.30 : 208,543.26 = 50,332.25 : x
2. Step 2: Convert to fraction form
   139,090.30/208,543.26 = 50,332.25/x
3. Step 3: Cross multiply
   139,090.30x = 208,543.26 × 50,332.25
4. Step 4: Simplify right side
   139,090.30x = 10,496,451,498.14
5. Step 5: Solve for x
   x = 10,496,451,498.14/139,090.30
6. Step 6: Final answer
   x = 75,465.01