Finding the Fourth Proportional to 78,321.69, 108,081.02 and 42,510.93

Step by Step Solution

1. Step 1: Write the proportion equation
   78,321.69 : 108,081.02 = 42,510.93 : x
2. Step 2: Convert to fraction form
   78,321.69/108,081.02 = 42,510.93/x
3. Step 3: Cross multiply
   78,321.69x = 108,081.02 × 42,510.93
4. Step 4: Simplify right side
   78,321.69x = 4,594,624,675.55
5. Step 5: Solve for x
   x = 4,594,624,675.55/78,321.69
6. Step 6: Final answer
   x = 58,663.50