Finding the Fourth Proportional to 42,091.84, 63,108.48 and 21,301.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,091.84 : 63,108.48 = 21,301.12 : x
2. Step 2: Convert to fraction form
   42,091.84/63,108.48 = 21,301.12/x
3. Step 3: Cross multiply
   42,091.84x = 63,108.48 × 21,301.12
4. Step 4: Simplify right side
   42,091.84x = 1,344,281,305.50
5. Step 5: Solve for x
   x = 1,344,281,305.50/42,091.84
6. Step 6: Final answer
   x = 31,936.86