Finding the Fourth Proportional to 78,381.63, 108,167.43 and 42,572.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,381.63 : 108,167.43 = 42,572.34 : x
2. Step 2: Convert to fraction form
   78,381.63/108,167.43 = 42,572.34/x
3. Step 3: Cross multiply
   78,381.63x = 108,167.43 × 42,572.34
4. Step 4: Simplify right side
   78,381.63x = 4,604,940,606.89
5. Step 5: Solve for x
   x = 4,604,940,606.89/78,381.63
6. Step 6: Final answer
   x = 58,750.25