Finding the Fourth Proportional to 80,807.51, 121,127.00 and 45,216.65

Step by Step Solution

1. Step 1: Write the proportion equation
   80,807.51 : 121,127.00 = 45,216.65 : x
2. Step 2: Convert to fraction form
   80,807.51/121,127.00 = 45,216.65/x
3. Step 3: Cross multiply
   80,807.51x = 121,127.00 × 45,216.65
4. Step 4: Simplify right side
   80,807.51x = 5,476,956,332.83
5. Step 5: Solve for x
   x = 5,476,956,332.83/80,807.51
6. Step 6: Final answer
   x = 67,777.82