Finding the Fourth Proportional to 158,694.72, 237,804 and 91,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   158,694.72 : 237,804 = 91,978.56 : x
2. Step 2: Convert to fraction form
   158,694.72/237,804 = 91,978.56/x
3. Step 3: Cross multiply
   158,694.72x = 237,804 × 91,978.56
4. Step 4: Simplify right side
   158,694.72x = 21,872,869,482.24
5. Step 5: Solve for x
   x = 21,872,869,482.24/158,694.72
6. Step 6: Final answer
   x = 137,829.85