Finding the Fourth Proportional to 99,100.84, 136,759.25 and 56,660.26

Step by Step Solution

1. Step 1: Write the proportion equation
   99,100.84 : 136,759.25 = 56,660.26 : x
2. Step 2: Convert to fraction form
   99,100.84/136,759.25 = 56,660.26/x
3. Step 3: Cross multiply
   99,100.84x = 136,759.25 × 56,660.26
4. Step 4: Simplify right side
   99,100.84x = 7,748,813,695.31
5. Step 5: Solve for x
   x = 7,748,813,695.31/99,100.84
6. Step 6: Final answer
   x = 78,191.20