Finding the Fourth Proportional to 149,123.16, 223,684.71 and 54,360.45

Step by Step Solution

1. Step 1: Write the proportion equation
   149,123.16 : 223,684.71 = 54,360.45 : x
2. Step 2: Convert to fraction form
   149,123.16/223,684.71 = 54,360.45/x
3. Step 3: Cross multiply
   149,123.16x = 223,684.71 × 54,360.45
4. Step 4: Simplify right side
   149,123.16x = 12,159,601,493.72
5. Step 5: Solve for x
   x = 12,159,601,493.72/149,123.16
6. Step 6: Final answer
   x = 81,540.66