Finding the Fourth Proportional to 105,037.43, 157,620.67 and 55,153.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,037.43 : 157,620.67 = 55,153.31 : x
2. Step 2: Convert to fraction form
   105,037.43/157,620.67 = 55,153.31/x
3. Step 3: Cross multiply
   105,037.43x = 157,620.67 × 55,153.31
4. Step 4: Simplify right side
   105,037.43x = 8,693,300,748.93
5. Step 5: Solve for x
   x = 8,693,300,748.93/105,037.43
6. Step 6: Final answer
   x = 82,763.84