Finding the Fourth Proportional to 42,518.29, 58,756.17 and 31,889.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,518.29 : 58,756.17 = 31,889.47 : x
2. Step 2: Convert to fraction form
   42,518.29/58,756.17 = 31,889.47/x
3. Step 3: Cross multiply
   42,518.29x = 58,756.17 × 31,889.47
4. Step 4: Simplify right side
   42,518.29x = 1,873,703,120.53
5. Step 5: Solve for x
   x = 1,873,703,120.53/42,518.29
6. Step 6: Final answer
   x = 44,068.17