Finding the Fourth Proportional to 43,123.61, 59,490.91 and 31,168.01

Step by Step Solution

1. Step 1: Write the proportion equation
   43,123.61 : 59,490.91 = 31,168.01 : x
2. Step 2: Convert to fraction form
   43,123.61/59,490.91 = 31,168.01/x
3. Step 3: Cross multiply
   43,123.61x = 59,490.91 × 31,168.01
4. Step 4: Simplify right side
   43,123.61x = 1,854,213,277.79
5. Step 5: Solve for x
   x = 1,854,213,277.79/43,123.61
6. Step 6: Final answer
   x = 42,997.64