Finding the Fourth Proportional to 99,610.84, 137,597.56 and 79,607.92

Step by Step Solution

1. Step 1: Write the proportion equation
   99,610.84 : 137,597.56 = 79,607.92 : x
2. Step 2: Convert to fraction form
   99,610.84/137,597.56 = 79,607.92/x
3. Step 3: Cross multiply
   99,610.84x = 137,597.56 × 79,607.92
4. Step 4: Simplify right side
   99,610.84x = 10,953,855,548.68
5. Step 5: Solve for x
   x = 10,953,855,548.68/99,610.84
6. Step 6: Final answer
   x = 109,966.50