Finding the Fourth Proportional to 56,604.94, 78,109.74 and 31,111.02

Step by Step Solution

1. Step 1: Write the proportion equation
   56,604.94 : 78,109.74 = 31,111.02 : x
2. Step 2: Convert to fraction form
   56,604.94/78,109.74 = 31,111.02/x
3. Step 3: Cross multiply
   56,604.94x = 78,109.74 × 31,111.02
4. Step 4: Simplify right side
   56,604.94x = 2,430,073,683.33
5. Step 5: Solve for x
   x = 2,430,073,683.33/56,604.94
6. Step 6: Final answer
   x = 42,930.42