Finding the Fourth Proportional to 76,646.31, 105,776.88 and 42,654.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,646.31 : 105,776.88 = 42,654.69 : x
2. Step 2: Convert to fraction form
   76,646.31/105,776.88 = 42,654.69/x
3. Step 3: Cross multiply
   76,646.31x = 105,776.88 × 42,654.69
4. Step 4: Simplify right side
   76,646.31x = 4,511,880,596.17
5. Step 5: Solve for x
   x = 4,511,880,596.17/76,646.31
6. Step 6: Final answer
   x = 58,866.24