Finding the Fourth Proportional to 114,991.46, 172,479.98 and 42,930.32

Step by Step Solution

1. Step 1: Write the proportion equation
   114,991.46 : 172,479.98 = 42,930.32 : x
2. Step 2: Convert to fraction form
   114,991.46/172,479.98 = 42,930.32/x
3. Step 3: Cross multiply
   114,991.46x = 172,479.98 × 42,930.32
4. Step 4: Simplify right side
   114,991.46x = 7,404,620,734.99
5. Step 5: Solve for x
   x = 7,404,620,734.99/114,991.46
6. Step 6: Final answer
   x = 64,392.79