Finding the Fourth Proportional to 492,057.30, 737,985.15 and 136,982.10

Step by Step Solution

1. Step 1: Write the proportion equation
   492,057.30 : 737,985.15 = 136,982.10 : x
2. Step 2: Convert to fraction form
   492,057.30/737,985.15 = 136,982.10/x
3. Step 3: Cross multiply
   492,057.30x = 737,985.15 × 136,982.10
4. Step 4: Simplify right side
   492,057.30x = 101,090,755,615.82
5. Step 5: Solve for x
   x = 101,090,755,615.82/492,057.30
6. Step 6: Final answer
   x = 205,445.09