Finding the Fourth Proportional to 76,505.62, 105,574.28 and 42,513.94

Step by Step Solution

1. Step 1: Write the proportion equation
   76,505.62 : 105,574.28 = 42,513.94 : x
2. Step 2: Convert to fraction form
   76,505.62/105,574.28 = 42,513.94/x
3. Step 3: Cross multiply
   76,505.62x = 105,574.28 × 42,513.94
4. Step 4: Simplify right side
   76,505.62x = 4,488,378,605.46
5. Step 5: Solve for x
   x = 4,488,378,605.46/76,505.62
6. Step 6: Final answer
   x = 58,667.31