Finding the Fourth Proportional to 64,699.32, 88,808.04 and 57,467.64

Step by Step Solution

1. Step 1: Write the proportion equation
   64,699.32 : 88,808.04 = 57,467.64 : x
2. Step 2: Convert to fraction form
   64,699.32/88,808.04 = 57,467.64/x
3. Step 3: Cross multiply
   64,699.32x = 88,808.04 × 57,467.64
4. Step 4: Simplify right side
   64,699.32x = 5,103,588,471.83
5. Step 5: Solve for x
   x = 5,103,588,471.83/64,699.32
6. Step 6: Final answer
   x = 78,881.64