Finding the Fourth Proportional to 78,561.50, 117,860.67 and 25,970.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,561.50 : 117,860.67 = 25,970.63 : x
2. Step 2: Convert to fraction form
   78,561.50/117,860.67 = 25,970.63/x
3. Step 3: Cross multiply
   78,561.50x = 117,860.67 × 25,970.63
4. Step 4: Simplify right side
   78,561.50x = 3,060,915,262.82
5. Step 5: Solve for x
   x = 3,060,915,262.82/78,561.50
6. Step 6: Final answer
   x = 38,962.03