Finding the Fourth Proportional to 91,568.50, 137,106.66 and 58,107.40

Step by Step Solution

1. Step 1: Write the proportion equation
   91,568.50 : 137,106.66 = 58,107.40 : x
2. Step 2: Convert to fraction form
   91,568.50/137,106.66 = 58,107.40/x
3. Step 3: Cross multiply
   91,568.50x = 137,106.66 × 58,107.40
4. Step 4: Simplify right side
   91,568.50x = 7,966,910,559.21
5. Step 5: Solve for x
   x = 7,966,910,559.21/91,568.50
6. Step 6: Final answer
   x = 87,004.93