Finding the Fourth Proportional to 301,614.31, 452,498.05 and 139,625.15

Step by Step Solution

1. Step 1: Write the proportion equation
   301,614.31 : 452,498.05 = 139,625.15 : x
2. Step 2: Convert to fraction form
   301,614.31/452,498.05 = 139,625.15/x
3. Step 3: Cross multiply
   301,614.31x = 452,498.05 × 139,625.15
4. Step 4: Simplify right side
   301,614.31x = 63,180,108,105.96
5. Step 5: Solve for x
   x = 63,180,108,105.96/301,614.31
6. Step 6: Final answer
   x = 209,473.18