Finding the Fourth Proportional to 131,696.25, 181,740.83 and 72,080.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,696.25 : 181,740.83 = 72,080.25 : x
2. Step 2: Convert to fraction form
   131,696.25/181,740.83 = 72,080.25/x
3. Step 3: Cross multiply
   131,696.25x = 181,740.83 × 72,080.25
4. Step 4: Simplify right side
   131,696.25x = 13,099,924,101.21
5. Step 5: Solve for x
   x = 13,099,924,101.21/131,696.25
6. Step 6: Final answer
   x = 99,470.75