Finding the Fourth Proportional to 76,303, 105,298.86 and 42,769.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,303 : 105,298.86 = 42,769.72 : x
2. Step 2: Convert to fraction form
   76,303/105,298.86 = 42,769.72/x
3. Step 3: Cross multiply
   76,303x = 105,298.86 × 42,769.72
4. Step 4: Simplify right side
   76,303x = 4,503,602,758.52
5. Step 5: Solve for x
   x = 4,503,602,758.52/76,303
6. Step 6: Final answer
   x = 59,022.62