Finding the Fourth Proportional to 99,080.39, 136,730.15 and 56,059.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,080.39 : 136,730.15 = 56,059.52 : x
2. Step 2: Convert to fraction form
   99,080.39/136,730.15 = 56,059.52/x
3. Step 3: Cross multiply
   99,080.39x = 136,730.15 × 56,059.52
4. Step 4: Simplify right side
   99,080.39x = 7,665,026,106.37
5. Step 5: Solve for x
   x = 7,665,026,106.37/99,080.39
6. Step 6: Final answer
   x = 77,361.69