Finding the Fourth Proportional to 115,758.39, 173,519.18 and 78,322.42

Step by Step Solution

1. Step 1: Write the proportion equation
   115,758.39 : 173,519.18 = 78,322.42 : x
2. Step 2: Convert to fraction form
   115,758.39/173,519.18 = 78,322.42/x
3. Step 3: Cross multiply
   115,758.39x = 173,519.18 × 78,322.42
4. Step 4: Simplify right side
   115,758.39x = 13,590,442,094.02
5. Step 5: Solve for x
   x = 13,590,442,094.02/115,758.39
6. Step 6: Final answer
   x = 117,403.52