Finding the Fourth Proportional to 76,646.16, 105,769.54 and 42,654.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,646.16 : 105,769.54 = 42,654.12 : x
2. Step 2: Convert to fraction form
   76,646.16/105,769.54 = 42,654.12/x
3. Step 3: Cross multiply
   76,646.16x = 105,769.54 × 42,654.12
4. Step 4: Simplify right side
   76,646.16x = 4,511,506,651.50
5. Step 5: Solve for x
   x = 4,511,506,651.50/76,646.16
6. Step 6: Final answer
   x = 58,861.48