Finding the Fourth Proportional to 42,763.59, 64,146.51 and 20,268.99

Step by Step Solution

1. Step 1: Write the proportion equation
   42,763.59 : 64,146.51 = 20,268.99 : x
2. Step 2: Convert to fraction form
   42,763.59/64,146.51 = 20,268.99/x
3. Step 3: Cross multiply
   42,763.59x = 64,146.51 × 20,268.99
4. Step 4: Simplify right side
   42,763.59x = 1,300,184,969.72
5. Step 5: Solve for x
   x = 1,300,184,969.72/42,763.59
6. Step 6: Final answer
   x = 30,404.02