Finding the Fourth Proportional to 107,690.96, 161,605.56 and 52,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   107,690.96 : 161,605.56 = 52,256.72 : x
2. Step 2: Convert to fraction form
   107,690.96/161,605.56 = 52,256.72/x
3. Step 3: Cross multiply
   107,690.96x = 161,605.56 × 52,256.72
4. Step 4: Simplify right side
   107,690.96x = 8,444,976,499.36
5. Step 5: Solve for x
   x = 8,444,976,499.36/107,690.96
6. Step 6: Final answer
   x = 78,418.62