Finding the Fourth Proportional to 78,046.71, 117,065.10 and 21,885.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,046.71 : 117,065.10 = 21,885.63 : x
2. Step 2: Convert to fraction form
   78,046.71/117,065.10 = 21,885.63/x
3. Step 3: Cross multiply
   78,046.71x = 117,065.10 × 21,885.63
4. Step 4: Simplify right side
   78,046.71x = 2,562,043,464.51
5. Step 5: Solve for x
   x = 2,562,043,464.51/78,046.71
6. Step 6: Final answer
   x = 32,827.05