Finding the Fourth Proportional to 106,385.94, 159,601.59 and 53,106.57

Step by Step Solution

1. Step 1: Write the proportion equation
   106,385.94 : 159,601.59 = 53,106.57 : x
2. Step 2: Convert to fraction form
   106,385.94/159,601.59 = 53,106.57/x
3. Step 3: Cross multiply
   106,385.94x = 159,601.59 × 53,106.57
4. Step 4: Simplify right side
   106,385.94x = 8,475,893,011.45
5. Step 5: Solve for x
   x = 8,475,893,011.45/106,385.94
6. Step 6: Final answer
   x = 79,671.18