Finding the Fourth Proportional to 78,460.16, 108,244.88 and 58,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,460.16 : 108,244.88 = 58,090.72 : x
2. Step 2: Convert to fraction form
   78,460.16/108,244.88 = 58,090.72/x
3. Step 3: Cross multiply
   78,460.16x = 108,244.88 × 58,090.72
4. Step 4: Simplify right side
   78,460.16x = 6,288,023,015.51
5. Step 5: Solve for x
   x = 6,288,023,015.51/78,460.16
6. Step 6: Final answer
   x = 80,142.88