Finding the Fourth Proportional to 78,741.21, 118,099.62 and 28,809.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,741.21 : 118,099.62 = 28,809.63 : x
2. Step 2: Convert to fraction form
   78,741.21/118,099.62 = 28,809.63/x
3. Step 3: Cross multiply
   78,741.21x = 118,099.62 × 28,809.63
4. Step 4: Simplify right side
   78,741.21x = 3,402,406,355.34
5. Step 5: Solve for x
   x = 3,402,406,355.34/78,741.21
6. Step 6: Final answer
   x = 43,209.98