Finding the Fourth Proportional to 78,320.02, 108,081.72 and 42,510.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,320.02 : 108,081.72 = 42,510.02 : x
2. Step 2: Convert to fraction form
   78,320.02/108,081.72 = 42,510.02/x
3. Step 3: Cross multiply
   78,320.02x = 108,081.72 × 42,510.02
4. Step 4: Simplify right side
   78,320.02x = 4,594,555,943.73
5. Step 5: Solve for x
   x = 4,594,555,943.73/78,320.02
6. Step 6: Final answer
   x = 58,663.88