Finding the Fourth Proportional to 79,931.52, 119,601.36 and 64,088.10

Step by Step Solution

1. Step 1: Write the proportion equation
   79,931.52 : 119,601.36 = 64,088.10 : x
2. Step 2: Convert to fraction form
   79,931.52/119,601.36 = 64,088.10/x
3. Step 3: Cross multiply
   79,931.52x = 119,601.36 × 64,088.10
4. Step 4: Simplify right side
   79,931.52x = 7,665,023,919.82
5. Step 5: Solve for x
   x = 7,665,023,919.82/79,931.52
6. Step 6: Final answer
   x = 95,894.89