Finding the Fourth Proportional to 76,665.84, 105,796.50 and 42,673.45

Step by Step Solution

1. Step 1: Write the proportion equation
   76,665.84 : 105,796.50 = 42,673.45 : x
2. Step 2: Convert to fraction form
   76,665.84/105,796.50 = 42,673.45/x
3. Step 3: Cross multiply
   76,665.84x = 105,796.50 × 42,673.45
4. Step 4: Simplify right side
   76,665.84x = 4,514,701,652.93
5. Step 5: Solve for x
   x = 4,514,701,652.93/76,665.84
6. Step 6: Final answer
   x = 58,888.05