Finding the Fourth Proportional to 78,068.24, 117,123.48 and 28,153.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,068.24 : 117,123.48 = 28,153.88 : x
2. Step 2: Convert to fraction form
   78,068.24/117,123.48 = 28,153.88/x
3. Step 3: Cross multiply
   78,068.24x = 117,123.48 × 28,153.88
4. Step 4: Simplify right side
   78,068.24x = 3,297,480,401.10
5. Step 5: Solve for x
   x = 3,297,480,401.10/78,068.24
6. Step 6: Final answer
   x = 42,238.44