Finding the Fourth Proportional to 78,492.30, 117,721.98 and 25,889.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,492.30 : 117,721.98 = 25,889.46 : x
2. Step 2: Convert to fraction form
   78,492.30/117,721.98 = 25,889.46/x
3. Step 3: Cross multiply
   78,492.30x = 117,721.98 × 25,889.46
4. Step 4: Simplify right side
   78,492.30x = 3,047,758,492.33
5. Step 5: Solve for x
   x = 3,047,758,492.33/78,492.30
6. Step 6: Final answer
   x = 38,828.76