Finding the Fourth Proportional to 78,573.48, 108,429.33 and 42,762.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,573.48 : 108,429.33 = 42,762.72 : x
2. Step 2: Convert to fraction form
   78,573.48/108,429.33 = 42,762.72/x
3. Step 3: Cross multiply
   78,573.48x = 108,429.33 × 42,762.72
4. Step 4: Simplify right side
   78,573.48x = 4,636,733,078.58
5. Step 5: Solve for x
   x = 4,636,733,078.58/78,573.48
6. Step 6: Final answer
   x = 59,011.43