Finding the Fourth Proportional to 249,697.38, 374,468.31 and 83,446.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,697.38 : 374,468.31 = 83,446.50 : x
2. Step 2: Convert to fraction form
   249,697.38/374,468.31 = 83,446.50/x
3. Step 3: Cross multiply
   249,697.38x = 374,468.31 × 83,446.50
4. Step 4: Simplify right side
   249,697.38x = 31,248,069,830.42
5. Step 5: Solve for x
   x = 31,248,069,830.42/249,697.38
6. Step 6: Final answer
   x = 125,143.76