Finding the Fourth Proportional to 76,880.72, 115,325.94 and 32,499.20

Step by Step Solution

1. Step 1: Write the proportion equation
   76,880.72 : 115,325.94 = 32,499.20 : x
2. Step 2: Convert to fraction form
   76,880.72/115,325.94 = 32,499.20/x
3. Step 3: Cross multiply
   76,880.72x = 115,325.94 × 32,499.20
4. Step 4: Simplify right side
   76,880.72x = 3,748,000,789.25
5. Step 5: Solve for x
   x = 3,748,000,789.25/76,880.72
6. Step 6: Final answer
   x = 48,750.85