Finding the Fourth Proportional to 78,945.40, 118,426.07 and 25,635.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,945.40 : 118,426.07 = 25,635.15 : x
2. Step 2: Convert to fraction form
   78,945.40/118,426.07 = 25,635.15/x
3. Step 3: Cross multiply
   78,945.40x = 118,426.07 × 25,635.15
4. Step 4: Simplify right side
   78,945.40x = 3,035,870,068.36
5. Step 5: Solve for x
   x = 3,035,870,068.36/78,945.40
6. Step 6: Final answer
   x = 38,455.31