Finding the Fourth Proportional to 76,123.49, 105,049.89 and 42,132.06

Step by Step Solution

1. Step 1: Write the proportion equation
   76,123.49 : 105,049.89 = 42,132.06 : x
2. Step 2: Convert to fraction form
   76,123.49/105,049.89 = 42,132.06/x
3. Step 3: Cross multiply
   76,123.49x = 105,049.89 × 42,132.06
4. Step 4: Simplify right side
   76,123.49x = 4,425,968,268.47
5. Step 5: Solve for x
   x = 4,425,968,268.47/76,123.49
6. Step 6: Final answer
   x = 58,141.96