Finding the Fourth Proportional to 78,536.69, 117,772.74 and 31,145.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,536.69 : 117,772.74 = 31,145.25 : x
2. Step 2: Convert to fraction form
   78,536.69/117,772.74 = 31,145.25/x
3. Step 3: Cross multiply
   78,536.69x = 117,772.74 × 31,145.25
4. Step 4: Simplify right side
   78,536.69x = 3,668,061,430.49
5. Step 5: Solve for x
   x = 3,668,061,430.49/78,536.69
6. Step 6: Final answer
   x = 46,705.07