Finding the Fourth Proportional to 81,061.48, 121,539.58 and 33,663.56

Step by Step Solution

1. Step 1: Write the proportion equation
   81,061.48 : 121,539.58 = 33,663.56 : x
2. Step 2: Convert to fraction form
   81,061.48/121,539.58 = 33,663.56/x
3. Step 3: Cross multiply
   81,061.48x = 121,539.58 × 33,663.56
4. Step 4: Simplify right side
   81,061.48x = 4,091,454,943.70
5. Step 5: Solve for x
   x = 4,091,454,943.70/81,061.48
6. Step 6: Final answer
   x = 50,473.48