Finding the Fourth Proportional to 102,477.41, 152,697.40 and 91,298.20

Step by Step Solution

1. Step 1: Write the proportion equation
   102,477.41 : 152,697.40 = 91,298.20 : x
2. Step 2: Convert to fraction form
   102,477.41/152,697.40 = 91,298.20/x
3. Step 3: Cross multiply
   102,477.41x = 152,697.40 × 91,298.20
4. Step 4: Simplify right side
   102,477.41x = 13,940,997,154.69
5. Step 5: Solve for x
   x = 13,940,997,154.69/102,477.41
6. Step 6: Final answer
   x = 136,039.71