Finding the Fourth Proportional to 76,803.06, 105,988.71 and 42,813.71

Step by Step Solution

1. Step 1: Write the proportion equation
   76,803.06 : 105,988.71 = 42,813.71 : x
2. Step 2: Convert to fraction form
   76,803.06/105,988.71 = 42,813.71/x
3. Step 3: Cross multiply
   76,803.06x = 105,988.71 × 42,813.71
4. Step 4: Simplify right side
   76,803.06x = 4,537,769,363.27
5. Step 5: Solve for x
   x = 4,537,769,363.27/76,803.06
6. Step 6: Final answer
   x = 59,083.18