Finding the Fourth Proportional to 61,302.59, 91,905 and 56,382.11

Step by Step Solution

1. Step 1: Write the proportion equation
   61,302.59 : 91,905 = 56,382.11 : x
2. Step 2: Convert to fraction form
   61,302.59/91,905 = 56,382.11/x
3. Step 3: Cross multiply
   61,302.59x = 91,905 × 56,382.11
4. Step 4: Simplify right side
   61,302.59x = 5,181,797,360.03
5. Step 5: Solve for x
   x = 5,181,797,360.03/61,302.59
6. Step 6: Final answer
   x = 84,528.20