Finding the Fourth Proportional to 49,870.96, 74,784.54 and 18,684.34

Step by Step Solution

1. Step 1: Write the proportion equation
   49,870.96 : 74,784.54 = 18,684.34 : x
2. Step 2: Convert to fraction form
   49,870.96/74,784.54 = 18,684.34/x
3. Step 3: Cross multiply
   49,870.96x = 74,784.54 × 18,684.34
4. Step 4: Simplify right side
   49,870.96x = 1,397,299,772.10
5. Step 5: Solve for x
   x = 1,397,299,772.10/49,870.96
6. Step 6: Final answer
   x = 28,018.31