Finding the Fourth Proportional to 151,291.10, 218,139.12 and 151,291.10

Step by Step Solution

1. Step 1: Write the proportion equation
   151,291.10 : 218,139.12 = 151,291.10 : x
2. Step 2: Convert to fraction form
   151,291.10/218,139.12 = 151,291.10/x
3. Step 3: Cross multiply
   151,291.10x = 218,139.12 × 151,291.10
4. Step 4: Simplify right side
   151,291.10x = 33,002,507,417.83
5. Step 5: Solve for x
   x = 33,002,507,417.83/151,291.10
6. Step 6: Final answer
   x = 218,139.12