Finding the Fourth Proportional to 91,025.29, 136,357.71 and 42,928.03

Step by Step Solution

1. Step 1: Write the proportion equation
   91,025.29 : 136,357.71 = 42,928.03 : x
2. Step 2: Convert to fraction form
   91,025.29/136,357.71 = 42,928.03/x
3. Step 3: Cross multiply
   91,025.29x = 136,357.71 × 42,928.03
4. Step 4: Simplify right side
   91,025.29x = 5,853,567,865.61
5. Step 5: Solve for x
   x = 5,853,567,865.61/91,025.29
6. Step 6: Final answer
   x = 64,307.05