Finding the Fourth Proportional to 357,886.31, 536,788.89 and 91,648.76

Step by Step Solution

1. Step 1: Write the proportion equation
   357,886.31 : 536,788.89 = 91,648.76 : x
2. Step 2: Convert to fraction form
   357,886.31/536,788.89 = 91,648.76/x
3. Step 3: Cross multiply
   357,886.31x = 536,788.89 × 91,648.76
4. Step 4: Simplify right side
   357,886.31x = 49,196,036,150.28
5. Step 5: Solve for x
   x = 49,196,036,150.28/357,886.31
6. Step 6: Final answer
   x = 137,462.75