Finding the Fourth Proportional to 99,139.22, 136,754.85 and 63,288.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,139.22 : 136,754.85 = 63,288.82 : x
2. Step 2: Convert to fraction form
   99,139.22/136,754.85 = 63,288.82/x
3. Step 3: Cross multiply
   99,139.22x = 136,754.85 × 63,288.82
4. Step 4: Simplify right side
   99,139.22x = 8,655,052,743.89
5. Step 5: Solve for x
   x = 8,655,052,743.89/99,139.22
6. Step 6: Final answer
   x = 87,302.01