Finding the Fourth Proportional to 120,966.72, 181,454.16 and 42,081.60

Step by Step Solution

1. Step 1: Write the proportion equation
   120,966.72 : 181,454.16 = 42,081.60 : x
2. Step 2: Convert to fraction form
   120,966.72/181,454.16 = 42,081.60/x
3. Step 3: Cross multiply
   120,966.72x = 181,454.16 × 42,081.60
4. Step 4: Simplify right side
   120,966.72x = 7,635,881,379.46
5. Step 5: Solve for x
   x = 7,635,881,379.46/120,966.72
6. Step 6: Final answer
   x = 63,123.82