Finding the Fourth Proportional to 42,158.10, 63,268.32 and 19,971.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,158.10 : 63,268.32 = 19,971.54 : x
2. Step 2: Convert to fraction form
   42,158.10/63,268.32 = 19,971.54/x
3. Step 3: Cross multiply
   42,158.10x = 63,268.32 × 19,971.54
4. Step 4: Simplify right side
   42,158.10x = 1,263,565,783.61
5. Step 5: Solve for x
   x = 1,263,565,783.61/42,158.10
6. Step 6: Final answer
   x = 29,972.08