Finding the Fourth Proportional to 42,865.11, 59,101.58 and 31,500

Step by Step Solution

1. Step 1: Write the proportion equation
   42,865.11 : 59,101.58 = 31,500 : x
2. Step 2: Convert to fraction form
   42,865.11/59,101.58 = 31,500/x
3. Step 3: Cross multiply
   42,865.11x = 59,101.58 × 31,500
4. Step 4: Simplify right side
   42,865.11x = 1,861,699,848.75
5. Step 5: Solve for x
   x = 1,861,699,848.75/42,865.11
6. Step 6: Final answer
   x = 43,431.59