Finding the Fourth Proportional to 123,653.16, 185,412.60 and 56,148.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,653.16 : 185,412.60 = 56,148.12 : x
2. Step 2: Convert to fraction form
   123,653.16/185,412.60 = 56,148.12/x
3. Step 3: Cross multiply
   123,653.16x = 185,412.60 × 56,148.12
4. Step 4: Simplify right side
   123,653.16x = 10,410,568,914.31
5. Step 5: Solve for x
   x = 10,410,568,914.31/123,653.16
6. Step 6: Final answer
   x = 84,191.69