Finding the Fourth Proportional to 31,298.99, 43,200.59 and 19,355.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,298.99 : 43,200.59 = 19,355.34 : x
2. Step 2: Convert to fraction form
   31,298.99/43,200.59 = 19,355.34/x
3. Step 3: Cross multiply
   31,298.99x = 43,200.59 × 19,355.34
4. Step 4: Simplify right side
   31,298.99x = 836,162,010.87
5. Step 5: Solve for x
   x = 836,162,010.87/31,298.99
6. Step 6: Final answer
   x = 26,715.31