Finding the Fourth Proportional to 60,499.71, 90,682.29 and 45,660.51

Step by Step Solution

1. Step 1: Write the proportion equation
   60,499.71 : 90,682.29 = 45,660.51 : x
2. Step 2: Convert to fraction form
   60,499.71/90,682.29 = 45,660.51/x
3. Step 3: Cross multiply
   60,499.71x = 90,682.29 × 45,660.51
4. Step 4: Simplify right side
   60,499.71x = 4,140,599,609.37
5. Step 5: Solve for x
   x = 4,140,599,609.37/60,499.71
6. Step 6: Final answer
   x = 68,439.99