Finding the Fourth Proportional to 99,338.88, 149,106.24 and 72,969.60

Step by Step Solution

1. Step 1: Write the proportion equation
   99,338.88 : 149,106.24 = 72,969.60 : x
2. Step 2: Convert to fraction form
   99,338.88/149,106.24 = 72,969.60/x
3. Step 3: Cross multiply
   99,338.88x = 149,106.24 × 72,969.60
4. Step 4: Simplify right side
   99,338.88x = 10,880,222,690.30
5. Step 5: Solve for x
   x = 10,880,222,690.30/99,338.88
6. Step 6: Final answer
   x = 109,526.33