Finding the Fourth Proportional to 78,572.98, 108,428.64 and 42,762.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,572.98 : 108,428.64 = 42,762.22 : x
2. Step 2: Convert to fraction form
   78,572.98/108,428.64 = 42,762.22/x
3. Step 3: Cross multiply
   78,572.98x = 108,428.64 × 42,762.22
4. Step 4: Simplify right side
   78,572.98x = 4,636,649,357.98
5. Step 5: Solve for x
   x = 4,636,649,357.98/78,572.98
6. Step 6: Final answer
   x = 59,010.74