Finding the Fourth Proportional to 148,856.86, 205,410.55 and 85,180.06

Step by Step Solution

1. Step 1: Write the proportion equation
   148,856.86 : 205,410.55 = 85,180.06 : x
2. Step 2: Convert to fraction form
   148,856.86/205,410.55 = 85,180.06/x
3. Step 3: Cross multiply
   148,856.86x = 205,410.55 × 85,180.06
4. Step 4: Simplify right side
   148,856.86x = 17,496,882,973.63
5. Step 5: Solve for x
   x = 17,496,882,973.63/148,856.86
6. Step 6: Final answer
   x = 117,541.66