Finding the Fourth Proportional to 43,143, 64,737.74 and 18,200.34

Step by Step Solution

1. Step 1: Write the proportion equation
   43,143 : 64,737.74 = 18,200.34 : x
2. Step 2: Convert to fraction form
   43,143/64,737.74 = 18,200.34/x
3. Step 3: Cross multiply
   43,143x = 64,737.74 × 18,200.34
4. Step 4: Simplify right side
   43,143x = 1,178,248,878.83
5. Step 5: Solve for x
   x = 1,178,248,878.83/43,143
6. Step 6: Final answer
   x = 27,310.31