Finding the Fourth Proportional to 91,690.50, 137,506.98 and 35,526.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,690.50 : 137,506.98 = 35,526.72 : x
2. Step 2: Convert to fraction form
   91,690.50/137,506.98 = 35,526.72/x
3. Step 3: Cross multiply
   91,690.50x = 137,506.98 × 35,526.72
4. Step 4: Simplify right side
   91,690.50x = 4,885,171,976.51
5. Step 5: Solve for x
   x = 4,885,171,976.51/91,690.50
6. Step 6: Final answer
   x = 53,278.93