Finding the Fourth Proportional to 249,731.30, 374,518.86 and 83,480.42

Step by Step Solution

1. Step 1: Write the proportion equation
   249,731.30 : 374,518.86 = 83,480.42 : x
2. Step 2: Convert to fraction form
   249,731.30/374,518.86 = 83,480.42/x
3. Step 3: Cross multiply
   249,731.30x = 374,518.86 × 83,480.42
4. Step 4: Simplify right side
   249,731.30x = 31,264,991,730.72
5. Step 5: Solve for x
   x = 31,264,991,730.72/249,731.30
6. Step 6: Final answer
   x = 125,194.53