Finding the Fourth Proportional to 123,146.72, 169,861.48 and 84,907.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,146.72 : 169,861.48 = 84,907.88 : x
2. Step 2: Convert to fraction form
   123,146.72/169,861.48 = 84,907.88/x
3. Step 3: Cross multiply
   123,146.72x = 169,861.48 × 84,907.88
4. Step 4: Simplify right side
   123,146.72x = 14,422,578,160.46
5. Step 5: Solve for x
   x = 14,422,578,160.46/123,146.72
6. Step 6: Final answer
   x = 117,117.03