Finding the Fourth Proportional to 56,588.77, 78,084.16 and 31,438.27

Step by Step Solution

1. Step 1: Write the proportion equation
   56,588.77 : 78,084.16 = 31,438.27 : x
2. Step 2: Convert to fraction form
   56,588.77/78,084.16 = 31,438.27/x
3. Step 3: Cross multiply
   56,588.77x = 78,084.16 × 31,438.27
4. Step 4: Simplify right side
   56,588.77x = 2,454,830,904.80
5. Step 5: Solve for x
   x = 2,454,830,904.80/56,588.77
6. Step 6: Final answer
   x = 43,380.18