Finding the Fourth Proportional to 42,150.84, 63,261.73 and 21,084.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,150.84 : 63,261.73 = 21,084.56 : x
2. Step 2: Convert to fraction form
   42,150.84/63,261.73 = 21,084.56/x
3. Step 3: Cross multiply
   42,150.84x = 63,261.73 × 21,084.56
4. Step 4: Simplify right side
   42,150.84x = 1,333,845,741.89
5. Step 5: Solve for x
   x = 1,333,845,741.89/42,150.84
6. Step 6: Final answer
   x = 31,644.58