Finding the Fourth Proportional to 78,137.58, 107,807.98 and 49,069.08

Step by Step Solution

1. Step 1: Write the proportion equation
   78,137.58 : 107,807.98 = 49,069.08 : x
2. Step 2: Convert to fraction form
   78,137.58/107,807.98 = 49,069.08/x
3. Step 3: Cross multiply
   78,137.58x = 107,807.98 × 49,069.08
4. Step 4: Simplify right side
   78,137.58x = 5,290,038,272.59
5. Step 5: Solve for x
   x = 5,290,038,272.59/78,137.58
6. Step 6: Final answer
   x = 67,701.59