Finding the Fourth Proportional to 115,004.10, 158,569.72 and 78,722.98

Step by Step Solution

1. Step 1: Write the proportion equation
   115,004.10 : 158,569.72 = 78,722.98 : x
2. Step 2: Convert to fraction form
   115,004.10/158,569.72 = 78,722.98/x
3. Step 3: Cross multiply
   115,004.10x = 158,569.72 × 78,722.98
4. Step 4: Simplify right side
   115,004.10x = 12,483,080,896.17
5. Step 5: Solve for x
   x = 12,483,080,896.17/115,004.10
6. Step 6: Final answer
   x = 108,544.66