Finding the Fourth Proportional to 76,234.50, 105,203.61 and 42,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,234.50 : 105,203.61 = 42,700.50 : x
2. Step 2: Convert to fraction form
   76,234.50/105,203.61 = 42,700.50/x
3. Step 3: Cross multiply
   76,234.50x = 105,203.61 × 42,700.50
4. Step 4: Simplify right side
   76,234.50x = 4,492,246,748.81
5. Step 5: Solve for x
   x = 4,492,246,748.81/76,234.50
6. Step 6: Final answer
   x = 58,926.69