Finding the Fourth Proportional to 109,386.50, 150,953.43 and 59,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,386.50 : 150,953.43 = 59,085.50 : x
2. Step 2: Convert to fraction form
   109,386.50/150,953.43 = 59,085.50/x
3. Step 3: Cross multiply
   109,386.50x = 150,953.43 × 59,085.50
4. Step 4: Simplify right side
   109,386.50x = 8,919,158,888.27
5. Step 5: Solve for x
   x = 8,919,158,888.27/109,386.50
6. Step 6: Final answer
   x = 81,538.02