Finding the Fourth Proportional to 77,876.50, 116,801.94 and 21,720.42

Step by Step Solution

1. Step 1: Write the proportion equation
   77,876.50 : 116,801.94 = 21,720.42 : x
2. Step 2: Convert to fraction form
   77,876.50/116,801.94 = 21,720.42/x
3. Step 3: Cross multiply
   77,876.50x = 116,801.94 × 21,720.42
4. Step 4: Simplify right side
   77,876.50x = 2,536,987,193.61
5. Step 5: Solve for x
   x = 2,536,987,193.61/77,876.50
6. Step 6: Final answer
   x = 32,577.06