Finding the Fourth Proportional to 69,123.87, 103,519.72 and 39,451.75

Step by Step Solution

1. Step 1: Write the proportion equation
   69,123.87 : 103,519.72 = 39,451.75 : x
2. Step 2: Convert to fraction form
   69,123.87/103,519.72 = 39,451.75/x
3. Step 3: Cross multiply
   69,123.87x = 103,519.72 × 39,451.75
4. Step 4: Simplify right side
   69,123.87x = 4,084,034,113.51
5. Step 5: Solve for x
   x = 4,084,034,113.51/69,123.87
6. Step 6: Final answer
   x = 59,082.83