Finding the Fourth Proportional to 78,061.83, 117,100.09 and 21,901.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,061.83 : 117,100.09 = 21,901.72 : x
2. Step 2: Convert to fraction form
   78,061.83/117,100.09 = 21,901.72/x
3. Step 3: Cross multiply
   78,061.83x = 117,100.09 × 21,901.72
4. Step 4: Simplify right side
   78,061.83x = 2,564,693,383.15
5. Step 5: Solve for x
   x = 2,564,693,383.15/78,061.83
6. Step 6: Final answer
   x = 32,854.64