Finding the Fourth Proportional to 78,452.53, 117,677.75 and 19,288.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,452.53 : 117,677.75 = 19,288.71 : x
2. Step 2: Convert to fraction form
   78,452.53/117,677.75 = 19,288.71/x
3. Step 3: Cross multiply
   78,452.53x = 117,677.75 × 19,288.71
4. Step 4: Simplify right side
   78,452.53x = 2,269,851,308.37
5. Step 5: Solve for x
   x = 2,269,851,308.37/78,452.53
6. Step 6: Final answer
   x = 28,932.80