Finding the Fourth Proportional to 93,020.16, 128,322.72 and 55,267.68

Step by Step Solution

1. Step 1: Write the proportion equation
   93,020.16 : 128,322.72 = 55,267.68 : x
2. Step 2: Convert to fraction form
   93,020.16/128,322.72 = 55,267.68/x
3. Step 3: Cross multiply
   93,020.16x = 128,322.72 × 55,267.68
4. Step 4: Simplify right side
   93,020.16x = 7,092,099,025.69
5. Step 5: Solve for x
   x = 7,092,099,025.69/93,020.16
6. Step 6: Final answer
   x = 76,242.60