Finding the Fourth Proportional to 137,238.10, 205,456.20 and 97,872.10

Step by Step Solution

1. Step 1: Write the proportion equation
   137,238.10 : 205,456.20 = 97,872.10 : x
2. Step 2: Convert to fraction form
   137,238.10/205,456.20 = 97,872.10/x
3. Step 3: Cross multiply
   137,238.10x = 205,456.20 × 97,872.10
4. Step 4: Simplify right side
   137,238.10x = 20,108,429,752.02
5. Step 5: Solve for x
   x = 20,108,429,752.02/137,238.10
6. Step 6: Final answer
   x = 146,522.21