Finding the Fourth Proportional to 105,213.16, 157,845.98 and 31,340.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,213.16 : 157,845.98 = 31,340.52 : x
2. Step 2: Convert to fraction form
   105,213.16/157,845.98 = 31,340.52/x
3. Step 3: Cross multiply
   105,213.16x = 157,845.98 × 31,340.52
4. Step 4: Simplify right side
   105,213.16x = 4,946,975,093.11
5. Step 5: Solve for x
   x = 4,946,975,093.11/105,213.16
6. Step 6: Final answer
   x = 47,018.60