Finding the Fourth Proportional to 93,307, 128,780.54 and 55,064.20

Step by Step Solution

1. Step 1: Write the proportion equation
   93,307 : 128,780.54 = 55,064.20 : x
2. Step 2: Convert to fraction form
   93,307/128,780.54 = 55,064.20/x
3. Step 3: Cross multiply
   93,307x = 128,780.54 × 55,064.20
4. Step 4: Simplify right side
   93,307x = 7,091,197,410.67
5. Step 5: Solve for x
   x = 7,091,197,410.67/93,307
6. Step 6: Final answer
   x = 75,998.56