Finding the Fourth Proportional to 78,291.83, 117,333.16 and 40,773.21

Step by Step Solution

1. Step 1: Write the proportion equation
   78,291.83 : 117,333.16 = 40,773.21 : x
2. Step 2: Convert to fraction form
   78,291.83/117,333.16 = 40,773.21/x
3. Step 3: Cross multiply
   78,291.83x = 117,333.16 × 40,773.21
4. Step 4: Simplify right side
   78,291.83x = 4,784,049,030.71
5. Step 5: Solve for x
   x = 4,784,049,030.71/78,291.83
6. Step 6: Final answer
   x = 61,105.34