Finding the Fourth Proportional to 76,346.76, 105,356.56 and 42,355.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,346.76 : 105,356.56 = 42,355.08 : x
2. Step 2: Convert to fraction form
   76,346.76/105,356.56 = 42,355.08/x
3. Step 3: Cross multiply
   76,346.76x = 105,356.56 × 42,355.08
4. Step 4: Simplify right side
   76,346.76x = 4,462,385,527.32
5. Step 5: Solve for x
   x = 4,462,385,527.32/76,346.76
6. Step 6: Final answer
   x = 58,448.92