Finding the Fourth Proportional to 76,061.28, 113,543.16 and 64,264.80

Step by Step Solution

1. Step 1: Write the proportion equation
   76,061.28 : 113,543.16 = 64,264.80 : x
2. Step 2: Convert to fraction form
   76,061.28/113,543.16 = 64,264.80/x
3. Step 3: Cross multiply
   76,061.28x = 113,543.16 × 64,264.80
4. Step 4: Simplify right side
   76,061.28x = 7,296,828,468.77
5. Step 5: Solve for x
   x = 7,296,828,468.77/76,061.28
6. Step 6: Final answer
   x = 95,933.55