Finding the Fourth Proportional to 78,108.84, 117,139 and 28,182.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,108.84 : 117,139 = 28,182.44 : x
2. Step 2: Convert to fraction form
   78,108.84/117,139 = 28,182.44/x
3. Step 3: Cross multiply
   78,108.84x = 117,139 × 28,182.44
4. Step 4: Simplify right side
   78,108.84x = 3,301,262,839.16
5. Step 5: Solve for x
   x = 3,301,262,839.16/78,108.84
6. Step 6: Final answer
   x = 42,264.91