Finding the Fourth Proportional to 74,215.89, 102,407.00 and 45,129.42

Step by Step Solution

1. Step 1: Write the proportion equation
   74,215.89 : 102,407.00 = 45,129.42 : x
2. Step 2: Convert to fraction form
   74,215.89/102,407.00 = 45,129.42/x
3. Step 3: Cross multiply
   74,215.89x = 102,407.00 × 45,129.42
4. Step 4: Simplify right side
   74,215.89x = 4,621,568,288.29
5. Step 5: Solve for x
   x = 4,621,568,288.29/74,215.89
6. Step 6: Final answer
   x = 62,271.95