Finding the Fourth Proportional to 118,942.90, 164,148.72 and 78,585.94

Step by Step Solution

1. Step 1: Write the proportion equation
   118,942.90 : 164,148.72 = 78,585.94 : x
2. Step 2: Convert to fraction form
   118,942.90/164,148.72 = 78,585.94/x
3. Step 3: Cross multiply
   118,942.90x = 164,148.72 × 78,585.94
4. Step 4: Simplify right side
   118,942.90x = 12,899,781,461.00
5. Step 5: Solve for x
   x = 12,899,781,461.00/118,942.90
6. Step 6: Final answer
   x = 108,453.56