Finding the Fourth Proportional to 153,090.93, 211,269 and 85,105.29

Step by Step Solution

1. Step 1: Write the proportion equation
   153,090.93 : 211,269 = 85,105.29 : x
2. Step 2: Convert to fraction form
   153,090.93/211,269 = 85,105.29/x
3. Step 3: Cross multiply
   153,090.93x = 211,269 × 85,105.29
4. Step 4: Simplify right side
   153,090.93x = 17,980,109,513.01
5. Step 5: Solve for x
   x = 17,980,109,513.01/153,090.93
6. Step 6: Final answer
   x = 117,447.26