Finding the Fourth Proportional to 56,583.09, 78,084.72 and 31,091.09

Step by Step Solution

1. Step 1: Write the proportion equation
   56,583.09 : 78,084.72 = 31,091.09 : x
2. Step 2: Convert to fraction form
   56,583.09/78,084.72 = 31,091.09/x
3. Step 3: Cross multiply
   56,583.09x = 78,084.72 × 31,091.09
4. Step 4: Simplify right side
   56,583.09x = 2,427,738,666.72
5. Step 5: Solve for x
   x = 2,427,738,666.72/56,583.09
6. Step 6: Final answer
   x = 42,905.73