Finding the Fourth Proportional to 89,434.08, 123,376.50 and 64,298.16

Step by Step Solution

1. Step 1: Write the proportion equation
   89,434.08 : 123,376.50 = 64,298.16 : x
2. Step 2: Convert to fraction form
   89,434.08/123,376.50 = 64,298.16/x
3. Step 3: Cross multiply
   89,434.08x = 123,376.50 × 64,298.16
4. Step 4: Simplify right side
   89,434.08x = 7,932,881,937.24
5. Step 5: Solve for x
   x = 7,932,881,937.24/89,434.08
6. Step 6: Final answer
   x = 88,700.88