Finding the Fourth Proportional to 91,914.40, 137,872.56 and 39,291.04

Step by Step Solution

1. Step 1: Write the proportion equation
   91,914.40 : 137,872.56 = 39,291.04 : x
2. Step 2: Convert to fraction form
   91,914.40/137,872.56 = 39,291.04/x
3. Step 3: Cross multiply
   91,914.40x = 137,872.56 × 39,291.04
4. Step 4: Simplify right side
   91,914.40x = 5,417,156,269.86
5. Step 5: Solve for x
   x = 5,417,156,269.86/91,914.40
6. Step 6: Final answer
   x = 58,936.97