Finding the Fourth Proportional to 78,380.63, 108,166.05 and 42,571.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,380.63 : 108,166.05 = 42,571.34 : x
2. Step 2: Convert to fraction form
   78,380.63/108,166.05 = 42,571.34/x
3. Step 3: Cross multiply
   78,380.63x = 108,166.05 × 42,571.34
4. Step 4: Simplify right side
   78,380.63x = 4,604,773,691.01
5. Step 5: Solve for x
   x = 4,604,773,691.01/78,380.63
6. Step 6: Final answer
   x = 58,748.87