Finding the Fourth Proportional to 49,980.18, 74,994.71 and 21,896.40

Step by Step Solution

1. Step 1: Write the proportion equation
   49,980.18 : 74,994.71 = 21,896.40 : x
2. Step 2: Convert to fraction form
   49,980.18/74,994.71 = 21,896.40/x
3. Step 3: Cross multiply
   49,980.18x = 74,994.71 × 21,896.40
4. Step 4: Simplify right side
   49,980.18x = 1,642,114,168.04
5. Step 5: Solve for x
   x = 1,642,114,168.04/49,980.18
6. Step 6: Final answer
   x = 32,855.31