Finding the Fourth Proportional to 66,073.86, 91,186.83 and 37,781.10

Step by Step Solution

1. Step 1: Write the proportion equation
   66,073.86 : 91,186.83 = 37,781.10 : x
2. Step 2: Convert to fraction form
   66,073.86/91,186.83 = 37,781.10/x
3. Step 3: Cross multiply
   66,073.86x = 91,186.83 × 37,781.10
4. Step 4: Simplify right side
   66,073.86x = 3,445,138,742.91
5. Step 5: Solve for x
   x = 3,445,138,742.91/66,073.86
6. Step 6: Final answer
   x = 52,140.72