Finding the Fourth Proportional to 153,870.49, 230,815.47 and 65,112.31

Step by Step Solution

1. Step 1: Write the proportion equation
   153,870.49 : 230,815.47 = 65,112.31 : x
2. Step 2: Convert to fraction form
   153,870.49/230,815.47 = 65,112.31/x
3. Step 3: Cross multiply
   153,870.49x = 230,815.47 × 65,112.31
4. Step 4: Simplify right side
   153,870.49x = 15,028,928,435.44
5. Step 5: Solve for x
   x = 15,028,928,435.44/153,870.49
6. Step 6: Final answer
   x = 97,672.58