Finding the Fourth Proportional to 60,386.56, 89,967.68 and 57,412.32

Step by Step Solution

1. Step 1: Write the proportion equation
   60,386.56 : 89,967.68 = 57,412.32 : x
2. Step 2: Convert to fraction form
   60,386.56/89,967.68 = 57,412.32/x
3. Step 3: Cross multiply
   60,386.56x = 89,967.68 × 57,412.32
4. Step 4: Simplify right side
   60,386.56x = 5,165,253,233.82
5. Step 5: Solve for x
   x = 5,165,253,233.82/60,386.56
6. Step 6: Final answer
   x = 85,536.47