Finding the Fourth Proportional to 69,318.83, 103,978.21 and 27,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,318.83 : 103,978.21 = 27,218.72 : x
2. Step 2: Convert to fraction form
   69,318.83/103,978.21 = 27,218.72/x
3. Step 3: Cross multiply
   69,318.83x = 103,978.21 × 27,218.72
4. Step 4: Simplify right side
   69,318.83x = 2,830,153,196.15
5. Step 5: Solve for x
   x = 2,830,153,196.15/69,318.83
6. Step 6: Final answer
   x = 40,828.06