Finding the Fourth Proportional to 92,080.72, 137,874.96 and 58,619.60

Step by Step Solution

1. Step 1: Write the proportion equation
   92,080.72 : 137,874.96 = 58,619.60 : x
2. Step 2: Convert to fraction form
   92,080.72/137,874.96 = 58,619.60/x
3. Step 3: Cross multiply
   92,080.72x = 137,874.96 × 58,619.60
4. Step 4: Simplify right side
   92,080.72x = 8,082,175,005.22
5. Step 5: Solve for x
   x = 8,082,175,005.22/92,080.72
6. Step 6: Final answer
   x = 87,772.72