Finding the Fourth Proportional to 76,206.30, 105,156.63 and 42,213.84

Step by Step Solution

1. Step 1: Write the proportion equation
   76,206.30 : 105,156.63 = 42,213.84 : x
2. Step 2: Convert to fraction form
   76,206.30/105,156.63 = 42,213.84/x
3. Step 3: Cross multiply
   76,206.30x = 105,156.63 × 42,213.84
4. Step 4: Simplify right side
   76,206.30x = 4,439,065,153.76
5. Step 5: Solve for x
   x = 4,439,065,153.76/76,206.30
6. Step 6: Final answer
   x = 58,250.63