Finding the Fourth Proportional to 76,638.29, 105,770.04 and 46,422.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,638.29 : 105,770.04 = 46,422.72 : x
2. Step 2: Convert to fraction form
   76,638.29/105,770.04 = 46,422.72/x
3. Step 3: Cross multiply
   76,638.29x = 105,770.04 × 46,422.72
4. Step 4: Simplify right side
   76,638.29x = 4,910,133,389.82
5. Step 5: Solve for x
   x = 4,910,133,389.82/76,638.29
6. Step 6: Final answer
   x = 64,068.93