Finding the Fourth Proportional to 72,035.78, 99,381.63 and 45,131.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,035.78 : 99,381.63 = 45,131.48 : x
2. Step 2: Convert to fraction form
   72,035.78/99,381.63 = 45,131.48/x
3. Step 3: Cross multiply
   72,035.78x = 99,381.63 × 45,131.48
4. Step 4: Simplify right side
   72,035.78x = 4,485,240,046.71
5. Step 5: Solve for x
   x = 4,485,240,046.71/72,035.78
6. Step 6: Final answer
   x = 62,264.06