Finding the Fourth Proportional to 168,111.70, 251,946.15 and 123,529.30

Step by Step Solution

1. Step 1: Write the proportion equation
   168,111.70 : 251,946.15 = 123,529.30 : x
2. Step 2: Convert to fraction form
   168,111.70/251,946.15 = 123,529.30/x
3. Step 3: Cross multiply
   168,111.70x = 251,946.15 × 123,529.30
4. Step 4: Simplify right side
   168,111.70x = 31,122,731,547.20
5. Step 5: Solve for x
   x = 31,122,731,547.20/168,111.70
6. Step 6: Final answer
   x = 185,131.26