Finding the Fourth Proportional to 56,575.74, 78,075.81 and 31,082.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,575.74 : 78,075.81 = 31,082.50 : x
2. Step 2: Convert to fraction form
   56,575.74/78,075.81 = 31,082.50/x
3. Step 3: Cross multiply
   56,575.74x = 78,075.81 × 31,082.50
4. Step 4: Simplify right side
   56,575.74x = 2,426,791,364.33
5. Step 5: Solve for x
   x = 2,426,791,364.33/56,575.74
6. Step 6: Final answer
   x = 42,894.56