Finding the Fourth Proportional to 42,150.47, 63,261.17 and 21,084.19

Step by Step Solution

1. Step 1: Write the proportion equation
   42,150.47 : 63,261.17 = 21,084.19 : x
2. Step 2: Convert to fraction form
   42,150.47/63,261.17 = 21,084.19/x
3. Step 3: Cross multiply
   42,150.47x = 63,261.17 × 21,084.19
4. Step 4: Simplify right side
   42,150.47x = 1,333,810,106.18
5. Step 5: Solve for x
   x = 1,333,810,106.18/42,150.47
6. Step 6: Final answer
   x = 31,644.02