Finding the Fourth Proportional to 113,354.17, 170,031.38 and 42,275.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,354.17 : 170,031.38 = 42,275.72 : x
2. Step 2: Convert to fraction form
   113,354.17/170,031.38 = 42,275.72/x
3. Step 3: Cross multiply
   113,354.17x = 170,031.38 × 42,275.72
4. Step 4: Simplify right side
   113,354.17x = 7,188,199,012.09
5. Step 5: Solve for x
   x = 7,188,199,012.09/113,354.17
6. Step 6: Final answer
   x = 63,413.63