Finding the Fourth Proportional to 111,270.22, 153,553.06 and 65,970.40

Step by Step Solution

1. Step 1: Write the proportion equation
   111,270.22 : 153,553.06 = 65,970.40 : x
2. Step 2: Convert to fraction form
   111,270.22/153,553.06 = 65,970.40/x
3. Step 3: Cross multiply
   111,270.22x = 153,553.06 × 65,970.40
4. Step 4: Simplify right side
   111,270.22x = 10,129,956,789.42
5. Step 5: Solve for x
   x = 10,129,956,789.42/111,270.22
6. Step 6: Final answer
   x = 91,039.24