Finding the Fourth Proportional to 76,303.98, 105,293.79 and 42,763.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,303.98 : 105,293.79 = 42,763.50 : x
2. Step 2: Convert to fraction form
   76,303.98/105,293.79 = 42,763.50/x
3. Step 3: Cross multiply
   76,303.98x = 105,293.79 × 42,763.50
4. Step 4: Simplify right side
   76,303.98x = 4,502,730,988.67
5. Step 5: Solve for x
   x = 4,502,730,988.67/76,303.98
6. Step 6: Final answer
   x = 59,010.43