Finding the Fourth Proportional to 76,403.34, 105,434.94 and 42,409.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,403.34 : 105,434.94 = 42,409.83 : x
2. Step 2: Convert to fraction form
   76,403.34/105,434.94 = 42,409.83/x
3. Step 3: Cross multiply
   76,403.34x = 105,434.94 × 42,409.83
4. Step 4: Simplify right side
   76,403.34x = 4,471,477,881.46
5. Step 5: Solve for x
   x = 4,471,477,881.46/76,403.34
6. Step 6: Final answer
   x = 58,524.64