Finding the Fourth Proportional to 42,734.58, 64,108.82 and 13,152.43

Step by Step Solution

1. Step 1: Write the proportion equation
   42,734.58 : 64,108.82 = 13,152.43 : x
2. Step 2: Convert to fraction form
   42,734.58/64,108.82 = 13,152.43/x
3. Step 3: Cross multiply
   42,734.58x = 64,108.82 × 13,152.43
4. Step 4: Simplify right side
   42,734.58x = 843,186,767.43
5. Step 5: Solve for x
   x = 843,186,767.43/42,734.58
6. Step 6: Final answer
   x = 19,730.78