Finding the Fourth Proportional to 152,985.58, 211,119.42 and 85,013.62

Step by Step Solution

1. Step 1: Write the proportion equation
   152,985.58 : 211,119.42 = 85,013.62 : x
2. Step 2: Convert to fraction form
   152,985.58/211,119.42 = 85,013.62/x
3. Step 3: Cross multiply
   152,985.58x = 211,119.42 × 85,013.62
4. Step 4: Simplify right side
   152,985.58x = 17,948,026,146.50
5. Step 5: Solve for x
   x = 17,948,026,146.50/152,985.58
6. Step 6: Final answer
   x = 117,318.42