Finding the Fourth Proportional to 45,429.29, 68,139.14 and 12,152.71

Step by Step Solution

1. Step 1: Write the proportion equation
   45,429.29 : 68,139.14 = 12,152.71 : x
2. Step 2: Convert to fraction form
   45,429.29/68,139.14 = 12,152.71/x
3. Step 3: Cross multiply
   45,429.29x = 68,139.14 × 12,152.71
4. Step 4: Simplify right side
   45,429.29x = 828,075,147.31
5. Step 5: Solve for x
   x = 828,075,147.31/45,429.29
6. Step 6: Final answer
   x = 18,227.78