Finding the Fourth Proportional to 56,100.81, 77,419.13 and 30,950.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,100.81 : 77,419.13 = 30,950.31 : x
2. Step 2: Convert to fraction form
   56,100.81/77,419.13 = 30,950.31/x
3. Step 3: Cross multiply
   56,100.81x = 77,419.13 × 30,950.31
4. Step 4: Simplify right side
   56,100.81x = 2,396,146,073.43
5. Step 5: Solve for x
   x = 2,396,146,073.43/56,100.81
6. Step 6: Final answer
   x = 42,711.43