Finding the Fourth Proportional to 42,407.99, 58,530.56 and 31,706.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,407.99 : 58,530.56 = 31,706.56 : x
2. Step 2: Convert to fraction form
   42,407.99/58,530.56 = 31,706.56/x
3. Step 3: Cross multiply
   42,407.99x = 58,530.56 × 31,706.56
4. Step 4: Simplify right side
   42,407.99x = 1,855,802,712.47
5. Step 5: Solve for x
   x = 1,855,802,712.47/42,407.99
6. Step 6: Final answer
   x = 43,760.69