Finding the Fourth Proportional to 78,178.58, 107,898.02 and 49,500.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,178.58 : 107,898.02 = 49,500.91 : x
2. Step 2: Convert to fraction form
   78,178.58/107,898.02 = 49,500.91/x
3. Step 3: Cross multiply
   78,178.58x = 107,898.02 × 49,500.91
4. Step 4: Simplify right side
   78,178.58x = 5,341,049,637.71
5. Step 5: Solve for x
   x = 5,341,049,637.71/78,178.58
6. Step 6: Final answer
   x = 68,318.58