Finding the Fourth Proportional to 99,105.71, 136,761.50 and 56,667.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,105.71 : 136,761.50 = 56,667.02 : x
2. Step 2: Convert to fraction form
   99,105.71/136,761.50 = 56,667.02/x
3. Step 3: Cross multiply
   99,105.71x = 136,761.50 × 56,667.02
4. Step 4: Simplify right side
   99,105.71x = 7,749,866,113.59
5. Step 5: Solve for x
   x = 7,749,866,113.59/99,105.71
6. Step 6: Final answer
   x = 78,197.98