Finding the Fourth Proportional to 60,686.48, 91,016.76 and 19,123.76

Step by Step Solution

1. Step 1: Write the proportion equation
   60,686.48 : 91,016.76 = 19,123.76 : x
2. Step 2: Convert to fraction form
   60,686.48/91,016.76 = 19,123.76/x
3. Step 3: Cross multiply
   60,686.48x = 91,016.76 × 19,123.76
4. Step 4: Simplify right side
   60,686.48x = 1,740,582,674.22
5. Step 5: Solve for x
   x = 1,740,582,674.22/60,686.48
6. Step 6: Final answer
   x = 28,681.56