Finding the Fourth Proportional to 42,092.84, 63,109.98 and 21,302.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,092.84 : 63,109.98 = 21,302.12 : x
2. Step 2: Convert to fraction form
   42,092.84/63,109.98 = 21,302.12/x
3. Step 3: Cross multiply
   42,092.84x = 63,109.98 × 21,302.12
4. Step 4: Simplify right side
   42,092.84x = 1,344,376,367.16
5. Step 5: Solve for x
   x = 1,344,376,367.16/42,092.84
6. Step 6: Final answer
   x = 31,938.36