Finding the Fourth Proportional to 117,363.74, 161,899.98 and 72,050.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,363.74 : 161,899.98 = 72,050.72 : x
2. Step 2: Convert to fraction form
   117,363.74/161,899.98 = 72,050.72/x
3. Step 3: Cross multiply
   117,363.74x = 161,899.98 × 72,050.72
4. Step 4: Simplify right side
   117,363.74x = 11,665,010,126.99
5. Step 5: Solve for x
   x = 11,665,010,126.99/117,363.74
6. Step 6: Final answer
   x = 99,391.94