Finding the Fourth Proportional to 109,123.95, 150,505.50 and 74,689.09

Step by Step Solution

1. Step 1: Write the proportion equation
   109,123.95 : 150,505.50 = 74,689.09 : x
2. Step 2: Convert to fraction form
   109,123.95/150,505.50 = 74,689.09/x
3. Step 3: Cross multiply
   109,123.95x = 150,505.50 × 74,689.09
4. Step 4: Simplify right side
   109,123.95x = 11,241,118,835.00
5. Step 5: Solve for x
   x = 11,241,118,835.00/109,123.95
6. Step 6: Final answer
   x = 103,012.39