Finding the Fourth Proportional to 153,086.94, 211,263.48 and 85,101.30

Step by Step Solution

1. Step 1: Write the proportion equation
   153,086.94 : 211,263.48 = 85,101.30 : x
2. Step 2: Convert to fraction form
   153,086.94/211,263.48 = 85,101.30/x
3. Step 3: Cross multiply
   153,086.94x = 211,263.48 × 85,101.30
4. Step 4: Simplify right side
   153,086.94x = 17,978,796,790.52
5. Step 5: Solve for x
   x = 17,978,796,790.52/153,086.94
6. Step 6: Final answer
   x = 117,441.74