Finding the Fourth Proportional to 56,570.82, 78,065.56 and 31,421.94

Step by Step Solution

1. Step 1: Write the proportion equation
   56,570.82 : 78,065.56 = 31,421.94 : x
2. Step 2: Convert to fraction form
   56,570.82/78,065.56 = 31,421.94/x
3. Step 3: Cross multiply
   56,570.82x = 78,065.56 × 31,421.94
4. Step 4: Simplify right side
   56,570.82x = 2,452,971,342.39
5. Step 5: Solve for x
   x = 2,452,971,342.39/56,570.82
6. Step 6: Final answer
   x = 43,361.07