Finding the Fourth Proportional to 114,991.48, 172,479.96 and 42,930.32

Step by Step Solution

1. Step 1: Write the proportion equation
   114,991.48 : 172,479.96 = 42,930.32 : x
2. Step 2: Convert to fraction form
   114,991.48/172,479.96 = 42,930.32/x
3. Step 3: Cross multiply
   114,991.48x = 172,479.96 × 42,930.32
4. Step 4: Simplify right side
   114,991.48x = 7,404,619,876.39
5. Step 5: Solve for x
   x = 7,404,619,876.39/114,991.48
6. Step 6: Final answer
   x = 64,392.77