Finding the Fourth Proportional to 77,576.50, 107,055.57 and 42,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,576.50 : 107,055.57 = 42,248.50 : x
2. Step 2: Convert to fraction form
   77,576.50/107,055.57 = 42,248.50/x
3. Step 3: Cross multiply
   77,576.50x = 107,055.57 × 42,248.50
4. Step 4: Simplify right side
   77,576.50x = 4,522,937,249.15
5. Step 5: Solve for x
   x = 4,522,937,249.15/77,576.50
6. Step 6: Final answer
   x = 58,302.93