Finding the Fourth Proportional to 116,422,984.78, 174,271,178.18 and 85,752,196.06

Step by Step Solution

1. Step 1: Write the proportion equation
   116,422,984.78 : 174,271,178.18 = 85,752,196.06 : x
2. Step 2: Convert to fraction form
   116,422,984.78/174,271,178.18 = 85,752,196.06/x
3. Step 3: Cross multiply
   116,422,984.78x = 174,271,178.18 × 85,752,196.06
4. Step 4: Simplify right side
   116,422,984.78x = 14,944,136,238,898,554
5. Step 5: Solve for x
   x = 14,944,136,238,898,554/116,422,984.78
6. Step 6: Final answer
   x = 128,360,703.58