Finding the Fourth Proportional to 59,669.46, 89,386.74 and 42,989.94

Step by Step Solution

1. Step 1: Write the proportion equation
   59,669.46 : 89,386.74 = 42,989.94 : x
2. Step 2: Convert to fraction form
   59,669.46/89,386.74 = 42,989.94/x
3. Step 3: Cross multiply
   59,669.46x = 89,386.74 × 42,989.94
4. Step 4: Simplify right side
   59,669.46x = 3,842,730,589.40
5. Step 5: Solve for x
   x = 3,842,730,589.40/59,669.46
6. Step 6: Final answer
   x = 64,400.29