Finding the Fourth Proportional to 59,476.96, 89,074.72 and 51,643.20

Step by Step Solution

1. Step 1: Write the proportion equation
   59,476.96 : 89,074.72 = 51,643.20 : x
2. Step 2: Convert to fraction form
   59,476.96/89,074.72 = 51,643.20/x
3. Step 3: Cross multiply
   59,476.96x = 89,074.72 × 51,643.20
4. Step 4: Simplify right side
   59,476.96x = 4,600,103,579.90
5. Step 5: Solve for x
   x = 4,600,103,579.90/59,476.96
6. Step 6: Final answer
   x = 77,342.61