Finding the Fourth Proportional to 56,557.56, 78,050.37 and 31,066.28

Step by Step Solution

1. Step 1: Write the proportion equation
   56,557.56 : 78,050.37 = 31,066.28 : x
2. Step 2: Convert to fraction form
   56,557.56/78,050.37 = 31,066.28/x
3. Step 3: Cross multiply
   56,557.56x = 78,050.37 × 31,066.28
4. Step 4: Simplify right side
   56,557.56x = 2,424,734,492.71
5. Step 5: Solve for x
   x = 2,424,734,492.71/56,557.56
6. Step 6: Final answer
   x = 42,871.98