Finding the Fourth Proportional to 77,978.94, 116,950.42 and 21,823.01

Step by Step Solution

1. Step 1: Write the proportion equation
   77,978.94 : 116,950.42 = 21,823.01 : x
2. Step 2: Convert to fraction form
   77,978.94/116,950.42 = 21,823.01/x
3. Step 3: Cross multiply
   77,978.94x = 116,950.42 × 21,823.01
4. Step 4: Simplify right side
   77,978.94x = 2,552,210,680.23
5. Step 5: Solve for x
   x = 2,552,210,680.23/77,978.94
6. Step 6: Final answer
   x = 32,729.49