Finding the Fourth Proportional to 72,900.27, 100,603.38 and 40,633.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72,900.27 : 100,603.38 = 40,633.99 : x
2. Step 2: Convert to fraction form
   72,900.27/100,603.38 = 40,633.99/x
3. Step 3: Cross multiply
   72,900.27x = 100,603.38 × 40,633.99
4. Step 4: Simplify right side
   72,900.27x = 4,087,916,890.75
5. Step 5: Solve for x
   x = 4,087,916,890.75/72,900.27
6. Step 6: Final answer
   x = 56,075.47