Finding the Fourth Proportional to 285,931.38, 428,900.72 and 75,567.50

Step by Step Solution

1. Step 1: Write the proportion equation
   285,931.38 : 428,900.72 = 75,567.50 : x
2. Step 2: Convert to fraction form
   285,931.38/428,900.72 = 75,567.50/x
3. Step 3: Cross multiply
   285,931.38x = 428,900.72 × 75,567.50
4. Step 4: Simplify right side
   285,931.38x = 32,410,955,158.60
5. Step 5: Solve for x
   x = 32,410,955,158.60/285,931.38
6. Step 6: Final answer
   x = 113,352.21