Finding the Fourth Proportional to 73,131.96, 109,737.60 and 31,035.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,131.96 : 109,737.60 = 31,035.72 : x
2. Step 2: Convert to fraction form
   73,131.96/109,737.60 = 31,035.72/x
3. Step 3: Cross multiply
   73,131.96x = 109,737.60 × 31,035.72
4. Step 4: Simplify right side
   73,131.96x = 3,405,785,427.07
5. Step 5: Solve for x
   x = 3,405,785,427.07/73,131.96
6. Step 6: Final answer
   x = 46,570.41