Finding the Fourth Proportional to 116,738.02, 161,104.50 and 71,401.78

Step by Step Solution

1. Step 1: Write the proportion equation
   116,738.02 : 161,104.50 = 71,401.78 : x
2. Step 2: Convert to fraction form
   116,738.02/161,104.50 = 71,401.78/x
3. Step 3: Cross multiply
   116,738.02x = 161,104.50 × 71,401.78
4. Step 4: Simplify right side
   116,738.02x = 11,503,148,066.01
5. Step 5: Solve for x
   x = 11,503,148,066.01/116,738.02
6. Step 6: Final answer
   x = 98,538.15