Finding the Fourth Proportional to 153,003.50, 211,164.63 and 85,935.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,003.50 : 211,164.63 = 85,935.50 : x
2. Step 2: Convert to fraction form
   153,003.50/211,164.63 = 85,935.50/x
3. Step 3: Cross multiply
   153,003.50x = 211,164.63 × 85,935.50
4. Step 4: Simplify right side
   153,003.50x = 18,146,538,061.37
5. Step 5: Solve for x
   x = 18,146,538,061.37/153,003.50
6. Step 6: Final answer
   x = 118,602.11