Finding the Fourth Proportional to 42,063.64, 63,134.34 and 21,301.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,063.64 : 63,134.34 = 21,301.72 : x
2. Step 2: Convert to fraction form
   42,063.64/63,134.34 = 21,301.72/x
3. Step 3: Cross multiply
   42,063.64x = 63,134.34 × 21,301.72
4. Step 4: Simplify right side
   42,063.64x = 1,344,870,033.06
5. Step 5: Solve for x
   x = 1,344,870,033.06/42,063.64
6. Step 6: Final answer
   x = 31,972.27