Finding the Fourth Proportional to 78,410.34, 116,785.53 and 78,028.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,410.34 : 116,785.53 = 78,028.02 : x
2. Step 2: Convert to fraction form
   78,410.34/116,785.53 = 78,028.02/x
3. Step 3: Cross multiply
   78,410.34x = 116,785.53 × 78,028.02
4. Step 4: Simplify right side
   78,410.34x = 9,112,543,670.55
5. Step 5: Solve for x
   x = 9,112,543,670.55/78,410.34
6. Step 6: Final answer
   x = 116,216.10