Finding the Fourth Proportional to 149,047.52, 205,685.43 and 85,385.57

Step by Step Solution

1. Step 1: Write the proportion equation
   149,047.52 : 205,685.43 = 85,385.57 : x
2. Step 2: Convert to fraction form
   149,047.52/205,685.43 = 85,385.57/x
3. Step 3: Cross multiply
   149,047.52x = 205,685.43 × 85,385.57
4. Step 4: Simplify right side
   149,047.52x = 17,562,567,681.25
5. Step 5: Solve for x
   x = 17,562,567,681.25/149,047.52
6. Step 6: Final answer
   x = 117,832.00