Finding the Fourth Proportional to 42,162.76, 63,302.46 and 21,400.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,162.76 : 63,302.46 = 21,400.84 : x
2. Step 2: Convert to fraction form
   42,162.76/63,302.46 = 21,400.84/x
3. Step 3: Cross multiply
   42,162.76x = 63,302.46 × 21,400.84
4. Step 4: Simplify right side
   42,162.76x = 1,354,725,818.07
5. Step 5: Solve for x
   x = 1,354,725,818.07/42,162.76
6. Step 6: Final answer
   x = 32,130.86