Finding the Fourth Proportional to 213,146,162.72, 294,148,836.96 and 130,624,010.72

Step by Step Solution

1. Step 1: Write the proportion equation
   213,146,162.72 : 294,148,836.96 = 130,624,010.72 : x
2. Step 2: Convert to fraction form
   213,146,162.72/294,148,836.96 = 130,624,010.72/x
3. Step 3: Cross multiply
   213,146,162.72x = 294,148,836.96 × 130,624,010.72
4. Step 4: Simplify right side
   213,146,162.72x = 38,422,900,832,338,568
5. Step 5: Solve for x
   x = 38,422,900,832,338,568/213,146,162.72
6. Step 6: Final answer
   x = 180,265,505.80