Finding the Fourth Proportional to 78,834.78, 108,743.34 and 56,181.03

Step by Step Solution

1. Step 1: Write the proportion equation
   78,834.78 : 108,743.34 = 56,181.03 : x
2. Step 2: Convert to fraction form
   78,834.78/108,743.34 = 56,181.03/x
3. Step 3: Cross multiply
   78,834.78x = 108,743.34 × 56,181.03
4. Step 4: Simplify right side
   78,834.78x = 6,109,312,303.12
5. Step 5: Solve for x
   x = 6,109,312,303.12/78,834.78
6. Step 6: Final answer
   x = 77,495.14