Finding the Fourth Proportional to 61,156.86, 91,646.75 and 42,162.00

Step by Step Solution

1. Step 1: Write the proportion equation
   61,156.86 : 91,646.75 = 42,162.00 : x
2. Step 2: Convert to fraction form
   61,156.86/91,646.75 = 42,162.00/x
3. Step 3: Cross multiply
   61,156.86x = 91,646.75 × 42,162.00
4. Step 4: Simplify right side
   61,156.86x = 3,864,009,815.27
5. Step 5: Solve for x
   x = 3,864,009,815.27/61,156.86
6. Step 6: Final answer
   x = 63,181.95