Finding the Fourth Proportional to 97,179.27, 145,719.33 and 72,942.09

Step by Step Solution

1. Step 1: Write the proportion equation
   97,179.27 : 145,719.33 = 72,942.09 : x
2. Step 2: Convert to fraction form
   97,179.27/145,719.33 = 72,942.09/x
3. Step 3: Cross multiply
   97,179.27x = 145,719.33 × 72,942.09
4. Step 4: Simplify right side
   97,179.27x = 10,629,072,483.60
5. Step 5: Solve for x
   x = 10,629,072,483.60/97,179.27
6. Step 6: Final answer
   x = 109,375.92