Finding the Fourth Proportional to 72,291.48, 99,798.42 and 45,448.77

Step by Step Solution

1. Step 1: Write the proportion equation
   72,291.48 : 99,798.42 = 45,448.77 : x
2. Step 2: Convert to fraction form
   72,291.48/99,798.42 = 45,448.77/x
3. Step 3: Cross multiply
   72,291.48x = 99,798.42 × 45,448.77
4. Step 4: Simplify right side
   72,291.48x = 4,535,715,436.94
5. Step 5: Solve for x
   x = 4,535,715,436.94/72,291.48
6. Step 6: Final answer
   x = 62,742.05