Finding the Fourth Proportional to 117,365.74, 161,902.74 and 72,052.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,365.74 : 161,902.74 = 72,052.72 : x
2. Step 2: Convert to fraction form
   117,365.74/161,902.74 = 72,052.72/x
3. Step 3: Cross multiply
   117,365.74x = 161,902.74 × 72,052.72
4. Step 4: Simplify right side
   117,365.74x = 11,665,532,792.45
5. Step 5: Solve for x
   x = 11,665,532,792.45/117,365.74
6. Step 6: Final answer
   x = 99,394.70