Finding the Fourth Proportional to 42,126.64, 63,228.84 and 21,364.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,126.64 : 63,228.84 = 21,364.72 : x
2. Step 2: Convert to fraction form
   42,126.64/63,228.84 = 21,364.72/x
3. Step 3: Cross multiply
   42,126.64x = 63,228.84 × 21,364.72
4. Step 4: Simplify right side
   42,126.64x = 1,350,866,462.52
5. Step 5: Solve for x
   x = 1,350,866,462.52/42,126.64
6. Step 6: Final answer
   x = 32,066.80