Finding the Fourth Proportional to 161,111.16, 241,604.64 and 61,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   161,111.16 : 241,604.64 = 61,218.72 : x
2. Step 2: Convert to fraction form
   161,111.16/241,604.64 = 61,218.72/x
3. Step 3: Cross multiply
   161,111.16x = 241,604.64 × 61,218.72
4. Step 4: Simplify right side
   161,111.16x = 14,790,726,806.86
5. Step 5: Solve for x
   x = 14,790,726,806.86/161,111.16
6. Step 6: Final answer
   x = 91,804.48