Finding the Fourth Proportional to 56,922.08, 78,550.56 and 31,428.02

Step by Step Solution

1. Step 1: Write the proportion equation
   56,922.08 : 78,550.56 = 31,428.02 : x
2. Step 2: Convert to fraction form
   56,922.08/78,550.56 = 31,428.02/x
3. Step 3: Cross multiply
   56,922.08x = 78,550.56 × 31,428.02
4. Step 4: Simplify right side
   56,922.08x = 2,468,688,570.69
5. Step 5: Solve for x
   x = 2,468,688,570.69/56,922.08
6. Step 6: Final answer
   x = 43,369.61