Finding the Fourth Proportional to 57,085.83, 78,810.10 and 34,430.56

Step by Step Solution

1. Step 1: Write the proportion equation
   57,085.83 : 78,810.10 = 34,430.56 : x
2. Step 2: Convert to fraction form
   57,085.83/78,810.10 = 34,430.56/x
3. Step 3: Cross multiply
   57,085.83x = 78,810.10 × 34,430.56
4. Step 4: Simplify right side
   57,085.83x = 2,713,475,593.55
5. Step 5: Solve for x
   x = 2,713,475,593.55/57,085.83
6. Step 6: Final answer
   x = 47,533.26