Finding the Fourth Proportional to 42,100.30, 58,102.50 and 31,471.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,100.30 : 58,102.50 = 31,471.48 : x
2. Step 2: Convert to fraction form
   42,100.30/58,102.50 = 31,471.48/x
3. Step 3: Cross multiply
   42,100.30x = 58,102.50 × 31,471.48
4. Step 4: Simplify right side
   42,100.30x = 1,828,571,666.70
5. Step 5: Solve for x
   x = 1,828,571,666.70/42,100.30
6. Step 6: Final answer
   x = 43,433.70