Finding the Fourth Proportional to 42,099.83, 63,104.54 and 20,998.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,099.83 : 63,104.54 = 20,998.18 : x
2. Step 2: Convert to fraction form
   42,099.83/63,104.54 = 20,998.18/x
3. Step 3: Cross multiply
   42,099.83x = 63,104.54 × 20,998.18
4. Step 4: Simplify right side
   42,099.83x = 1,325,080,384.47
5. Step 5: Solve for x
   x = 1,325,080,384.47/42,099.83
6. Step 6: Final answer
   x = 31,474.72