Finding the Fourth Proportional to 76,790.67, 105,967.76 and 42,802.87

Step by Step Solution

1. Step 1: Write the proportion equation
   76,790.67 : 105,967.76 = 42,802.87 : x
2. Step 2: Convert to fraction form
   76,790.67/105,967.76 = 42,802.87/x
3. Step 3: Cross multiply
   76,790.67x = 105,967.76 × 42,802.87
4. Step 4: Simplify right side
   76,790.67x = 4,535,724,255.47
5. Step 5: Solve for x
   x = 4,535,724,255.47/76,790.67
6. Step 6: Final answer
   x = 59,066.09