Finding the Fourth Proportional to 99,708.52, 137,459.94 and 79,633

Step by Step Solution

1. Step 1: Write the proportion equation
   99,708.52 : 137,459.94 = 79,633 : x
2. Step 2: Convert to fraction form
   99,708.52/137,459.94 = 79,633/x
3. Step 3: Cross multiply
   99,708.52x = 137,459.94 × 79,633
4. Step 4: Simplify right side
   99,708.52x = 10,946,347,402.02
5. Step 5: Solve for x
   x = 10,946,347,402.02/99,708.52
6. Step 6: Final answer
   x = 109,783.47