Finding the Fourth Proportional to 56,548.69, 78,038.67 and 31,056.70

Step by Step Solution

1. Step 1: Write the proportion equation
   56,548.69 : 78,038.67 = 31,056.70 : x
2. Step 2: Convert to fraction form
   56,548.69/78,038.67 = 31,056.70/x
3. Step 3: Cross multiply
   56,548.69x = 78,038.67 × 31,056.70
4. Step 4: Simplify right side
   56,548.69x = 2,423,623,562.59
5. Step 5: Solve for x
   x = 2,423,623,562.59/56,548.69
6. Step 6: Final answer
   x = 42,859.06