Finding the Fourth Proportional to 123,613.12, 186,346.17 and 115,373.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,613.12 : 186,346.17 = 115,373.88 : x
2. Step 2: Convert to fraction form
   123,613.12/186,346.17 = 115,373.88/x
3. Step 3: Cross multiply
   123,613.12x = 186,346.17 × 115,373.88
4. Step 4: Simplify right side
   123,613.12x = 21,499,480,656.04
5. Step 5: Solve for x
   x = 21,499,480,656.04/123,613.12
6. Step 6: Final answer
   x = 173,925.56