Finding the Fourth Proportional to 53,783.29, 74,223.33 and 31,123.34

Step by Step Solution

1. Step 1: Write the proportion equation
   53,783.29 : 74,223.33 = 31,123.34 : x
2. Step 2: Convert to fraction form
   53,783.29/74,223.33 = 31,123.34/x
3. Step 3: Cross multiply
   53,783.29x = 74,223.33 × 31,123.34
4. Step 4: Simplify right side
   53,783.29x = 2,310,077,935.52
5. Step 5: Solve for x
   x = 2,310,077,935.52/53,783.29
6. Step 6: Final answer
   x = 42,951.59