Finding the Fourth Proportional to 76,298.64, 105,289.20 and 42,308.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,298.64 : 105,289.20 = 42,308.52 : x
2. Step 2: Convert to fraction form
   76,298.64/105,289.20 = 42,308.52/x
3. Step 3: Cross multiply
   76,298.64x = 105,289.20 × 42,308.52
4. Step 4: Simplify right side
   76,298.64x = 4,454,630,223.98
5. Step 5: Solve for x
   x = 4,454,630,223.98/76,298.64
6. Step 6: Final answer
   x = 58,384.14