Finding the Fourth Proportional to 42,763.46, 64,088.69 and 30,956.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,763.46 : 64,088.69 = 30,956.72 : x
2. Step 2: Convert to fraction form
   42,763.46/64,088.69 = 30,956.72/x
3. Step 3: Cross multiply
   42,763.46x = 64,088.69 × 30,956.72
4. Step 4: Simplify right side
   42,763.46x = 1,983,975,156.27
5. Step 5: Solve for x
   x = 1,983,975,156.27/42,763.46
6. Step 6: Final answer
   x = 46,394.17