Finding the Fourth Proportional to 91,713.12, 137,589.42 and 28,532.04

Step by Step Solution

1. Step 1: Write the proportion equation
   91,713.12 : 137,589.42 = 28,532.04 : x
2. Step 2: Convert to fraction form
   91,713.12/137,589.42 = 28,532.04/x
3. Step 3: Cross multiply
   91,713.12x = 137,589.42 × 28,532.04
4. Step 4: Simplify right side
   91,713.12x = 3,925,706,835.02
5. Step 5: Solve for x
   x = 3,925,706,835.02/91,713.12
6. Step 6: Final answer
   x = 42,804.20