Finding the Fourth Proportional to 85,649.56, 128,430.06 and 37,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,649.56 : 128,430.06 = 37,598.50 : x
2. Step 2: Convert to fraction form
   85,649.56/128,430.06 = 37,598.50/x
3. Step 3: Cross multiply
   85,649.56x = 128,430.06 × 37,598.50
4. Step 4: Simplify right side
   85,649.56x = 4,828,777,289.83
5. Step 5: Solve for x
   x = 4,828,777,289.83/85,649.56
6. Step 6: Final answer
   x = 56,378.31