Finding the Fourth Proportional to 42,428.42, 63,612.33 and 19,926.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,428.42 : 63,612.33 = 19,926.53 : x
2. Step 2: Convert to fraction form
   42,428.42/63,612.33 = 19,926.53/x
3. Step 3: Cross multiply
   42,428.42x = 63,612.33 × 19,926.53
4. Step 4: Simplify right side
   42,428.42x = 1,267,572,684.05
5. Step 5: Solve for x
   x = 1,267,572,684.05/42,428.42
6. Step 6: Final answer
   x = 29,875.56