Finding the Fourth Proportional to 78,320.07, 108,081.91 and 42,510.08

Step by Step Solution

1. Step 1: Write the proportion equation
   78,320.07 : 108,081.91 = 42,510.08 : x
2. Step 2: Convert to fraction form
   78,320.07/108,081.91 = 42,510.08/x
3. Step 3: Cross multiply
   78,320.07x = 108,081.91 × 42,510.08
4. Step 4: Simplify right side
   78,320.07x = 4,594,570,724.88
5. Step 5: Solve for x
   x = 4,594,570,724.88/78,320.07
6. Step 6: Final answer
   x = 58,664.03