Finding the Fourth Proportional to 123,758.78, 185,305.58 and 78,535.29

Step by Step Solution

1. Step 1: Write the proportion equation
   123,758.78 : 185,305.58 = 78,535.29 : x
2. Step 2: Convert to fraction form
   123,758.78/185,305.58 = 78,535.29/x
3. Step 3: Cross multiply
   123,758.78x = 185,305.58 × 78,535.29
4. Step 4: Simplify right side
   123,758.78x = 14,553,027,071.24
5. Step 5: Solve for x
   x = 14,553,027,071.24/123,758.78
6. Step 6: Final answer
   x = 117,591.87