Finding the Fourth Proportional to 152,811.75, 229,187.30 and 76,890.05

Step by Step Solution

1. Step 1: Write the proportion equation
   152,811.75 : 229,187.30 = 76,890.05 : x
2. Step 2: Convert to fraction form
   152,811.75/229,187.30 = 76,890.05/x
3. Step 3: Cross multiply
   152,811.75x = 229,187.30 × 76,890.05
4. Step 4: Simplify right side
   152,811.75x = 17,622,222,956.37
5. Step 5: Solve for x
   x = 17,622,222,956.37/152,811.75
6. Step 6: Final answer
   x = 115,319.82