Finding the Fourth Proportional to 70,345.72, 105,507.18 and 25,993.36

Step by Step Solution

1. Step 1: Write the proportion equation
   70,345.72 : 105,507.18 = 25,993.36 : x
2. Step 2: Convert to fraction form
   70,345.72/105,507.18 = 25,993.36/x
3. Step 3: Cross multiply
   70,345.72x = 105,507.18 × 25,993.36
4. Step 4: Simplify right side
   70,345.72x = 2,742,486,112.32
5. Step 5: Solve for x
   x = 2,742,486,112.32/70,345.72
6. Step 6: Final answer
   x = 38,985.83