Finding the Fourth Proportional to 78,164.24, 107,866.32 and 42,354.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,164.24 : 107,866.32 = 42,354.40 : x
2. Step 2: Convert to fraction form
   78,164.24/107,866.32 = 42,354.40/x
3. Step 3: Cross multiply
   78,164.24x = 107,866.32 × 42,354.40
4. Step 4: Simplify right side
   78,164.24x = 4,568,613,263.81
5. Step 5: Solve for x
   x = 4,568,613,263.81/78,164.24
6. Step 6: Final answer
   x = 58,448.89