Finding the Fourth Proportional to 117,139.83, 175,708.17 and 28,394.10

Step by Step Solution

1. Step 1: Write the proportion equation
   117,139.83 : 175,708.17 = 28,394.10 : x
2. Step 2: Convert to fraction form
   117,139.83/175,708.17 = 28,394.10/x
3. Step 3: Cross multiply
   117,139.83x = 175,708.17 × 28,394.10
4. Step 4: Simplify right side
   117,139.83x = 4,989,075,349.80
5. Step 5: Solve for x
   x = 4,989,075,349.80/117,139.83
6. Step 6: Final answer
   x = 42,590.77