Finding the Fourth Proportional to 78,722.04, 108,635.72 and 42,912.03

Step by Step Solution

1. Step 1: Write the proportion equation
   78,722.04 : 108,635.72 = 42,912.03 : x
2. Step 2: Convert to fraction form
   78,722.04/108,635.72 = 42,912.03/x
3. Step 3: Cross multiply
   78,722.04x = 108,635.72 × 42,912.03
4. Step 4: Simplify right side
   78,722.04x = 4,661,779,061.15
5. Step 5: Solve for x
   x = 4,661,779,061.15/78,722.04
6. Step 6: Final answer
   x = 59,218.22