Finding the Fourth Proportional to 69,365.51, 104,061.24 and 21,978.66

Step by Step Solution

1. Step 1: Write the proportion equation
   69,365.51 : 104,061.24 = 21,978.66 : x
2. Step 2: Convert to fraction form
   69,365.51/104,061.24 = 21,978.66/x
3. Step 3: Cross multiply
   69,365.51x = 104,061.24 × 21,978.66
4. Step 4: Simplify right side
   69,365.51x = 2,287,126,613.14
5. Step 5: Solve for x
   x = 2,287,126,613.14/69,365.51
6. Step 6: Final answer
   x = 32,972.10