Finding the Fourth Proportional to 77,839.10, 116,758.73 and 21,679.32

Step by Step Solution

1. Step 1: Write the proportion equation
   77,839.10 : 116,758.73 = 21,679.32 : x
2. Step 2: Convert to fraction form
   77,839.10/116,758.73 = 21,679.32/x
3. Step 3: Cross multiply
   77,839.10x = 116,758.73 × 21,679.32
4. Step 4: Simplify right side
   77,839.10x = 2,531,249,870.46
5. Step 5: Solve for x
   x = 2,531,249,870.46/77,839.10
6. Step 6: Final answer
   x = 32,519.00