Finding the Fourth Proportional to 78,067.50, 116,810.78 and 68,534.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,067.50 : 116,810.78 = 68,534.88 : x
2. Step 2: Convert to fraction form
   78,067.50/116,810.78 = 68,534.88/x
3. Step 3: Cross multiply
   78,067.50x = 116,810.78 × 68,534.88
4. Step 4: Simplify right side
   78,067.50x = 8,005,613,573.15
5. Step 5: Solve for x
   x = 8,005,613,573.15/78,067.50
6. Step 6: Final answer
   x = 102,547.33