Finding the Fourth Proportional to 78,407.17, 117,573.82 and 28,452.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,407.17 : 117,573.82 = 28,452.31 : x
2. Step 2: Convert to fraction form
   78,407.17/117,573.82 = 28,452.31/x
3. Step 3: Cross multiply
   78,407.17x = 117,573.82 × 28,452.31
4. Step 4: Simplify right side
   78,407.17x = 3,345,246,774.52
5. Step 5: Solve for x
   x = 3,345,246,774.52/78,407.17
6. Step 6: Final answer
   x = 42,665.06