Finding the Fourth Proportional to 76,654.08, 105,784.38 and 42,664.86

Step by Step Solution

1. Step 1: Write the proportion equation
   76,654.08 : 105,784.38 = 42,664.86 : x
2. Step 2: Convert to fraction form
   76,654.08/105,784.38 = 42,664.86/x
3. Step 3: Cross multiply
   76,654.08x = 105,784.38 × 42,664.86
4. Step 4: Simplify right side
   76,654.08x = 4,513,275,762.89
5. Step 5: Solve for x
   x = 4,513,275,762.89/76,654.08
6. Step 6: Final answer
   x = 58,878.48