Finding the Fourth Proportional to 91,719.86, 137,565.60 and 37,690.02

Step by Step Solution

1. Step 1: Write the proportion equation
   91,719.86 : 137,565.60 = 37,690.02 : x
2. Step 2: Convert to fraction form
   91,719.86/137,565.60 = 37,690.02/x
3. Step 3: Cross multiply
   91,719.86x = 137,565.60 × 37,690.02
4. Step 4: Simplify right side
   91,719.86x = 5,184,850,215.31
5. Step 5: Solve for x
   x = 5,184,850,215.31/91,719.86
6. Step 6: Final answer
   x = 56,529.20