Finding the Fourth Proportional to 99,085.59, 136,738.17 and 56,645.04

Step by Step Solution

1. Step 1: Write the proportion equation
   99,085.59 : 136,738.17 = 56,645.04 : x
2. Step 2: Convert to fraction form
   99,085.59/136,738.17 = 56,645.04/x
3. Step 3: Cross multiply
   99,085.59x = 136,738.17 × 56,645.04
4. Step 4: Simplify right side
   99,085.59x = 7,745,539,109.18
5. Step 5: Solve for x
   x = 7,745,539,109.18/99,085.59
6. Step 6: Final answer
   x = 78,170.19