Finding the Fourth Proportional to 99,553.32, 137,293.38 and 65,961

Step by Step Solution

1. Step 1: Write the proportion equation
   99,553.32 : 137,293.38 = 65,961 : x
2. Step 2: Convert to fraction form
   99,553.32/137,293.38 = 65,961/x
3. Step 3: Cross multiply
   99,553.32x = 137,293.38 × 65,961
4. Step 4: Simplify right side
   99,553.32x = 9,056,008,638.18
5. Step 5: Solve for x
   x = 9,056,008,638.18/99,553.32
6. Step 6: Final answer
   x = 90,966.42