Finding the Fourth Proportional to 116,060.74, 160,212.81 and 78,386.02

Step by Step Solution

1. Step 1: Write the proportion equation
   116,060.74 : 160,212.81 = 78,386.02 : x
2. Step 2: Convert to fraction form
   116,060.74/160,212.81 = 78,386.02/x
3. Step 3: Cross multiply
   116,060.74x = 160,212.81 × 78,386.02
4. Step 4: Simplify right side
   116,060.74x = 12,558,444,528.92
5. Step 5: Solve for x
   x = 12,558,444,528.92/116,060.74
6. Step 6: Final answer
   x = 108,205.79