Finding the Fourth Proportional to 219,131.16, 302,415.24 and 123,603

Step by Step Solution

1. Step 1: Write the proportion equation
   219,131.16 : 302,415.24 = 123,603 : x
2. Step 2: Convert to fraction form
   219,131.16/302,415.24 = 123,603/x
3. Step 3: Cross multiply
   219,131.16x = 302,415.24 × 123,603
4. Step 4: Simplify right side
   219,131.16x = 37,379,430,909.72
5. Step 5: Solve for x
   x = 37,379,430,909.72/219,131.16
6. Step 6: Final answer
   x = 170,580.17