Finding the Fourth Proportional to 78,364.96, 117,564.72 and 25,790.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,364.96 : 117,564.72 = 25,790.56 : x
2. Step 2: Convert to fraction form
   78,364.96/117,564.72 = 25,790.56/x
3. Step 3: Cross multiply
   78,364.96x = 117,564.72 × 25,790.56
4. Step 4: Simplify right side
   78,364.96x = 3,032,059,965.04
5. Step 5: Solve for x
   x = 3,032,059,965.04/78,364.96
6. Step 6: Final answer
   x = 38,691.53