Finding the Fourth Proportional to 357,862, 536,811.12 and 91,624.72

Step by Step Solution

1. Step 1: Write the proportion equation
   357,862 : 536,811.12 = 91,624.72 : x
2. Step 2: Convert to fraction form
   357,862/536,811.12 = 91,624.72/x
3. Step 3: Cross multiply
   357,862x = 536,811.12 × 91,624.72
4. Step 4: Simplify right side
   357,862x = 49,185,168,562.89
5. Step 5: Solve for x
   x = 49,185,168,562.89/357,862
6. Step 6: Final answer
   x = 137,441.72