Finding the Fourth Proportional to 42,843.72, 64,153.80 and 34,478.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,843.72 : 64,153.80 = 34,478.04 : x
2. Step 2: Convert to fraction form
   42,843.72/64,153.80 = 34,478.04/x
3. Step 3: Cross multiply
   42,843.72x = 64,153.80 × 34,478.04
4. Step 4: Simplify right side
   42,843.72x = 2,211,897,282.55
5. Step 5: Solve for x
   x = 2,211,897,282.55/42,843.72
6. Step 6: Final answer
   x = 51,627.11