Finding the Fourth Proportional to 66,916.96, 99,790.72 and 58,635.52

Step by Step Solution

1. Step 1: Write the proportion equation
   66,916.96 : 99,790.72 = 58,635.52 : x
2. Step 2: Convert to fraction form
   66,916.96/99,790.72 = 58,635.52/x
3. Step 3: Cross multiply
   66,916.96x = 99,790.72 × 58,635.52
4. Step 4: Simplify right side
   66,916.96x = 5,851,280,758.37
5. Step 5: Solve for x
   x = 5,851,280,758.37/66,916.96
6. Step 6: Final answer
   x = 87,440.92