Finding the Fourth Proportional to 76,654.76, 105,787.05 and 42,665.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,654.76 : 105,787.05 = 42,665.42 : x
2. Step 2: Convert to fraction form
   76,654.76/105,787.05 = 42,665.42/x
3. Step 3: Cross multiply
   76,654.76x = 105,787.05 × 42,665.42
4. Step 4: Simplify right side
   76,654.76x = 4,513,448,918.81
5. Step 5: Solve for x
   x = 4,513,448,918.81/76,654.76
6. Step 6: Final answer
   x = 58,880.22