Finding the Fourth Proportional to 42,457.62, 63,664.46 and 19,064.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,457.62 : 63,664.46 = 19,064.10 : x
2. Step 2: Convert to fraction form
   42,457.62/63,664.46 = 19,064.10/x
3. Step 3: Cross multiply
   42,457.62x = 63,664.46 × 19,064.10
4. Step 4: Simplify right side
   42,457.62x = 1,213,705,631.89
5. Step 5: Solve for x
   x = 1,213,705,631.89/42,457.62
6. Step 6: Final answer
   x = 28,586.29