Finding the Fourth Proportional to 115,758.89, 173,519.94 and 78,322.92

Step by Step Solution

1. Step 1: Write the proportion equation
   115,758.89 : 173,519.94 = 78,322.92 : x
2. Step 2: Convert to fraction form
   115,758.89/173,519.94 = 78,322.92/x
3. Step 3: Cross multiply
   115,758.89x = 173,519.94 × 78,322.92
4. Step 4: Simplify right side
   115,758.89x = 13,590,587,581.47
5. Step 5: Solve for x
   x = 13,590,587,581.47/115,758.89
6. Step 6: Final answer
   x = 117,404.27