Finding the Fourth Proportional to 76,799.08, 105,969.84 and 42,800.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,799.08 : 105,969.84 = 42,800.10 : x
2. Step 2: Convert to fraction form
   76,799.08/105,969.84 = 42,800.10/x
3. Step 3: Cross multiply
   76,799.08x = 105,969.84 × 42,800.10
4. Step 4: Simplify right side
   76,799.08x = 4,535,519,748.98
5. Step 5: Solve for x
   x = 4,535,519,748.98/76,799.08
6. Step 6: Final answer
   x = 59,056.95