Finding the Fourth Proportional to 91,300.88, 125,948.04 and 57,786.32

Step by Step Solution

1. Step 1: Write the proportion equation
   91,300.88 : 125,948.04 = 57,786.32 : x
2. Step 2: Convert to fraction form
   91,300.88/125,948.04 = 57,786.32/x
3. Step 3: Cross multiply
   91,300.88x = 125,948.04 × 57,786.32
4. Step 4: Simplify right side
   91,300.88x = 7,278,073,742.81
5. Step 5: Solve for x
   x = 7,278,073,742.81/91,300.88
6. Step 6: Final answer
   x = 79,715.26