Finding the Fourth Proportional to 56,939.83, 78,577.37 and 31,445.48

Step by Step Solution

1. Step 1: Write the proportion equation
   56,939.83 : 78,577.37 = 31,445.48 : x
2. Step 2: Convert to fraction form
   56,939.83/78,577.37 = 31,445.48/x
3. Step 3: Cross multiply
   56,939.83x = 78,577.37 × 31,445.48
4. Step 4: Simplify right side
   56,939.83x = 2,470,903,116.79
5. Step 5: Solve for x
   x = 2,470,903,116.79/56,939.83
6. Step 6: Final answer
   x = 43,394.99