Finding the Fourth Proportional to 121,273.48, 181,910.56 and 42,387.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,273.48 : 181,910.56 = 42,387.72 : x
2. Step 2: Convert to fraction form
   121,273.48/181,910.56 = 42,387.72/x
3. Step 3: Cross multiply
   121,273.48x = 181,910.56 × 42,387.72
4. Step 4: Simplify right side
   121,273.48x = 7,710,772,972.77
5. Step 5: Solve for x
   x = 7,710,772,972.77/121,273.48
6. Step 6: Final answer
   x = 63,581.69