Finding the Fourth Proportional to 78,384.48, 108,171.36 and 42,574.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,384.48 : 108,171.36 = 42,574.80 : x
2. Step 2: Convert to fraction form
   78,384.48/108,171.36 = 42,574.80/x
3. Step 3: Cross multiply
   78,384.48x = 108,171.36 × 42,574.80
4. Step 4: Simplify right side
   78,384.48x = 4,605,374,017.73
5. Step 5: Solve for x
   x = 4,605,374,017.73/78,384.48
6. Step 6: Final answer
   x = 58,753.65