Finding the Fourth Proportional to 78,076.69, 117,106.31 and 21,918.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,076.69 : 117,106.31 = 21,918.98 : x
2. Step 2: Convert to fraction form
   78,076.69/117,106.31 = 21,918.98/x
3. Step 3: Cross multiply
   78,076.69x = 117,106.31 × 21,918.98
4. Step 4: Simplify right side
   78,076.69x = 2,566,851,214.33
5. Step 5: Solve for x
   x = 2,566,851,214.33/78,076.69
6. Step 6: Final answer
   x = 32,876.03