Finding the Fourth Proportional to 78,281, 108,028.05 and 42,471.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,281 : 108,028.05 = 42,471.17 : x
2. Step 2: Convert to fraction form
   78,281/108,028.05 = 42,471.17/x
3. Step 3: Cross multiply
   78,281x = 108,028.05 × 42,471.17
4. Step 4: Simplify right side
   78,281x = 4,588,077,676.32
5. Step 5: Solve for x
   x = 4,588,077,676.32/78,281
6. Step 6: Final answer
   x = 58,610.36