Finding the Fourth Proportional to 78,499.55, 108,291.29 and 46,645.90

Step by Step Solution

1. Step 1: Write the proportion equation
   78,499.55 : 108,291.29 = 46,645.90 : x
2. Step 2: Convert to fraction form
   78,499.55/108,291.29 = 46,645.90/x
3. Step 3: Cross multiply
   78,499.55x = 108,291.29 × 46,645.90
4. Step 4: Simplify right side
   78,499.55x = 5,051,344,684.21
5. Step 5: Solve for x
   x = 5,051,344,684.21/78,499.55
6. Step 6: Final answer
   x = 64,348.71