Finding the Fourth Proportional to 91,718.86, 137,564.10 and 37,689.02

Step by Step Solution

1. Step 1: Write the proportion equation
   91,718.86 : 137,564.10 = 37,689.02 : x
2. Step 2: Convert to fraction form
   91,718.86/137,564.10 = 37,689.02/x
3. Step 3: Cross multiply
   91,718.86x = 137,564.10 × 37,689.02
4. Step 4: Simplify right side
   91,718.86x = 5,184,656,116.18
5. Step 5: Solve for x
   x = 5,184,656,116.18/91,718.86
6. Step 6: Final answer
   x = 56,527.70