Finding the Fourth Proportional to 56,568.07, 78,061.77 and 31,419.19

Step by Step Solution

1. Step 1: Write the proportion equation
   56,568.07 : 78,061.77 = 31,419.19 : x
2. Step 2: Convert to fraction form
   56,568.07/78,061.77 = 31,419.19/x
3. Step 3: Cross multiply
   56,568.07x = 78,061.77 × 31,419.19
4. Step 4: Simplify right side
   56,568.07x = 2,452,637,583.37
5. Step 5: Solve for x
   x = 2,452,637,583.37/56,568.07
6. Step 6: Final answer
   x = 43,357.28