Finding the Fourth Proportional to 116,424.32, 160,663.92 and 76,205.12

Step by Step Solution

1. Step 1: Write the proportion equation
   116,424.32 : 160,663.92 = 76,205.12 : x
2. Step 2: Convert to fraction form
   116,424.32/160,663.92 = 76,205.12/x
3. Step 3: Cross multiply
   116,424.32x = 160,663.92 × 76,205.12
4. Step 4: Simplify right side
   116,424.32x = 12,243,413,303.27
5. Step 5: Solve for x
   x = 12,243,413,303.27/116,424.32
6. Step 6: Final answer
   x = 105,161.99