Finding the Fourth Proportional to 76,503.69, 105,575.13 and 42,969.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,503.69 : 105,575.13 = 42,969.69 : x
2. Step 2: Convert to fraction form
   76,503.69/105,575.13 = 42,969.69/x
3. Step 3: Cross multiply
   76,503.69x = 105,575.13 × 42,969.69
4. Step 4: Simplify right side
   76,503.69x = 4,536,530,607.81
5. Step 5: Solve for x
   x = 4,536,530,607.81/76,503.69
6. Step 6: Final answer
   x = 59,298.19