Finding the Fourth Proportional to 76,345.42, 105,356.94 and 42,354.58

Step by Step Solution

1. Step 1: Write the proportion equation
   76,345.42 : 105,356.94 = 42,354.58 : x
2. Step 2: Convert to fraction form
   76,345.42/105,356.94 = 42,354.58/x
3. Step 3: Cross multiply
   76,345.42x = 105,356.94 × 42,354.58
4. Step 4: Simplify right side
   76,345.42x = 4,462,348,943.79
5. Step 5: Solve for x
   x = 4,462,348,943.79/76,345.42
6. Step 6: Final answer
   x = 58,449.46