Finding the Fourth Proportional to 219,115, 302,380.71 and 123,623.89

Step by Step Solution

1. Step 1: Write the proportion equation
   219,115 : 302,380.71 = 123,623.89 : x
2. Step 2: Convert to fraction form
   219,115/302,380.71 = 123,623.89/x
3. Step 3: Cross multiply
   219,115x = 302,380.71 × 123,623.89
4. Step 4: Simplify right side
   219,115x = 37,381,479,631.16
5. Step 5: Solve for x
   x = 37,381,479,631.16/219,115
6. Step 6: Final answer
   x = 170,602.10