Finding the Fourth Proportional to 76,276, 105,266.64 and 42,744.16

Step by Step Solution

1. Step 1: Write the proportion equation
   76,276 : 105,266.64 = 42,744.16 : x
2. Step 2: Convert to fraction form
   76,276/105,266.64 = 42,744.16/x
3. Step 3: Cross multiply
   76,276x = 105,266.64 × 42,744.16
4. Step 4: Simplify right side
   76,276x = 4,499,534,102.82
5. Step 5: Solve for x
   x = 4,499,534,102.82/76,276
6. Step 6: Final answer
   x = 58,990.17