Finding the Fourth Proportional to 116,136.03, 174,086.39 and 78,699.89

Step by Step Solution

1. Step 1: Write the proportion equation
   116,136.03 : 174,086.39 = 78,699.89 : x
2. Step 2: Convert to fraction form
   116,136.03/174,086.39 = 78,699.89/x
3. Step 3: Cross multiply
   116,136.03x = 174,086.39 × 78,699.89
4. Step 4: Simplify right side
   116,136.03x = 13,700,578,479.57
5. Step 5: Solve for x
   x = 13,700,578,479.57/116,136.03
6. Step 6: Final answer
   x = 117,970.09