Finding the Fourth Proportional to 72,090.67, 99,408.73 and 49,462.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,090.67 : 99,408.73 = 49,462.74 : x
2. Step 2: Convert to fraction form
   72,090.67/99,408.73 = 49,462.74/x
3. Step 3: Cross multiply
   72,090.67x = 99,408.73 × 49,462.74
4. Step 4: Simplify right side
   72,090.67x = 4,917,028,165.72
5. Step 5: Solve for x
   x = 4,917,028,165.72/72,090.67
6. Step 6: Final answer
   x = 68,206.17