Finding the Fourth Proportional to 72,090.98, 108,131.02 and 19,499.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,090.98 : 108,131.02 = 19,499.10 : x
2. Step 2: Convert to fraction form
   72,090.98/108,131.02 = 19,499.10/x
3. Step 3: Cross multiply
   72,090.98x = 108,131.02 × 19,499.10
4. Step 4: Simplify right side
   72,090.98x = 2,108,457,572.08
5. Step 5: Solve for x
   x = 2,108,457,572.08/72,090.98
6. Step 6: Final answer
   x = 29,247.18