Finding the Fourth Proportional to 78,130.92, 107,820.06 and 42,320.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,130.92 : 107,820.06 = 42,320.52 : x
2. Step 2: Convert to fraction form
   78,130.92/107,820.06 = 42,320.52/x
3. Step 3: Cross multiply
   78,130.92x = 107,820.06 × 42,320.52
4. Step 4: Simplify right side
   78,130.92x = 4,563,001,005.63
5. Step 5: Solve for x
   x = 4,563,001,005.63/78,130.92
6. Step 6: Final answer
   x = 58,401.99