Finding the Fourth Proportional to 137,059.98, 205,091.76 and 113,145.15

Step by Step Solution

1. Step 1: Write the proportion equation
   137,059.98 : 205,091.76 = 113,145.15 : x
2. Step 2: Convert to fraction form
   137,059.98/205,091.76 = 113,145.15/x
3. Step 3: Cross multiply
   137,059.98x = 205,091.76 × 113,145.15
4. Step 4: Simplify right side
   137,059.98x = 23,205,137,948.96
5. Step 5: Solve for x
   x = 23,205,137,948.96/137,059.98
6. Step 6: Final answer
   x = 169,306.44