Finding the Fourth Proportional to 161,250.42, 241,875.18 and 42,921.88

Step by Step Solution

1. Step 1: Write the proportion equation
   161,250.42 : 241,875.18 = 42,921.88 : x
2. Step 2: Convert to fraction form
   161,250.42/241,875.18 = 42,921.88/x
3. Step 3: Cross multiply
   161,250.42x = 241,875.18 × 42,921.88
4. Step 4: Simplify right side
   161,250.42x = 10,381,737,450.94
5. Step 5: Solve for x
   x = 10,381,737,450.94/161,250.42
6. Step 6: Final answer
   x = 64,382.70