Finding the Fourth Proportional to 53,019.38, 79,565.58 and 21,854.63

Step by Step Solution

1. Step 1: Write the proportion equation
   53,019.38 : 79,565.58 = 21,854.63 : x
2. Step 2: Convert to fraction form
   53,019.38/79,565.58 = 21,854.63/x
3. Step 3: Cross multiply
   53,019.38x = 79,565.58 × 21,854.63
4. Step 4: Simplify right side
   53,019.38x = 1,738,875,913.81
5. Step 5: Solve for x
   x = 1,738,875,913.81/53,019.38
6. Step 6: Final answer
   x = 32,796.99