Finding the Fourth Proportional to 42,149.21, 63,259.29 and 21,082.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,149.21 : 63,259.29 = 21,082.94 : x
2. Step 2: Convert to fraction form
   42,149.21/63,259.29 = 21,082.94/x
3. Step 3: Cross multiply
   42,149.21x = 63,259.29 × 21,082.94
4. Step 4: Simplify right side
   42,149.21x = 1,333,691,499.22
5. Step 5: Solve for x
   x = 1,333,691,499.22/42,149.21
6. Step 6: Final answer
   x = 31,642.15