Finding the Fourth Proportional to 113,820.48, 170,686.98 and 78,653.52

Step by Step Solution

1. Step 1: Write the proportion equation
   113,820.48 : 170,686.98 = 78,653.52 : x
2. Step 2: Convert to fraction form
   113,820.48/170,686.98 = 78,653.52/x
3. Step 3: Cross multiply
   113,820.48x = 170,686.98 × 78,653.52
4. Step 4: Simplify right side
   113,820.48x = 13,425,131,795.17
5. Step 5: Solve for x
   x = 13,425,131,795.17/113,820.48
6. Step 6: Final answer
   x = 117,950.05