Finding the Fourth Proportional to 80,948, 121,192.96 and 42,910.56

Step by Step Solution

1. Step 1: Write the proportion equation
   80,948 : 121,192.96 = 42,910.56 : x
2. Step 2: Convert to fraction form
   80,948/121,192.96 = 42,910.56/x
3. Step 3: Cross multiply
   80,948x = 121,192.96 × 42,910.56
4. Step 4: Simplify right side
   80,948x = 5,200,457,781.66
5. Step 5: Solve for x
   x = 5,200,457,781.66/80,948
6. Step 6: Final answer
   x = 64,244.43