Finding the Fourth Proportional to 78,386.90, 117,499.82 and 30,982.74

Step by Step Solution

1. Step 1: Write the proportion equation
   78,386.90 : 117,499.82 = 30,982.74 : x
2. Step 2: Convert to fraction form
   78,386.90/117,499.82 = 30,982.74/x
3. Step 3: Cross multiply
   78,386.90x = 117,499.82 × 30,982.74
4. Step 4: Simplify right side
   78,386.90x = 3,640,466,373.11
5. Step 5: Solve for x
   x = 3,640,466,373.11/78,386.90
6. Step 6: Final answer
   x = 46,442.28