Finding the Fourth Proportional to 76,307.25, 105,298.86 and 42,314.49

Step by Step Solution

1. Step 1: Write the proportion equation
   76,307.25 : 105,298.86 = 42,314.49 : x
2. Step 2: Convert to fraction form
   76,307.25/105,298.86 = 42,314.49/x
3. Step 3: Cross multiply
   76,307.25x = 105,298.86 × 42,314.49
4. Step 4: Simplify right side
   76,307.25x = 4,455,667,558.48
5. Step 5: Solve for x
   x = 4,455,667,558.48/76,307.25
6. Step 6: Final answer
   x = 58,391.14