Finding the Fourth Proportional to 78,088.74, 117,132.72 and 18,924.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,088.74 : 117,132.72 = 18,924.42 : x
2. Step 2: Convert to fraction form
   78,088.74/117,132.72 = 18,924.42/x
3. Step 3: Cross multiply
   78,088.74x = 117,132.72 × 18,924.42
4. Step 4: Simplify right side
   78,088.74x = 2,216,668,789.02
5. Step 5: Solve for x
   x = 2,216,668,789.02/78,088.74
6. Step 6: Final answer
   x = 28,386.54