Finding the Fourth Proportional to 99,063.73, 136,672.07 and 65,090.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,063.73 : 136,672.07 = 65,090.52 : x
2. Step 2: Convert to fraction form
   99,063.73/136,672.07 = 65,090.52/x
3. Step 3: Cross multiply
   99,063.73x = 136,672.07 × 65,090.52
4. Step 4: Simplify right side
   99,063.73x = 8,896,056,105.78
5. Step 5: Solve for x
   x = 8,896,056,105.78/99,063.73
6. Step 6: Final answer
   x = 89,801.34