Finding the Fourth Proportional to 45,142.83, 67,723.29 and 31,109.58

Step by Step Solution

1. Step 1: Write the proportion equation
   45,142.83 : 67,723.29 = 31,109.58 : x
2. Step 2: Convert to fraction form
   45,142.83/67,723.29 = 31,109.58/x
3. Step 3: Cross multiply
   45,142.83x = 67,723.29 × 31,109.58
4. Step 4: Simplify right side
   45,142.83x = 2,106,843,108.12
5. Step 5: Solve for x
   x = 2,106,843,108.12/45,142.83
6. Step 6: Final answer
   x = 46,670.60