Finding the Fourth Proportional to 102,028.30, 152,893.05 and 91,498.30

Step by Step Solution

1. Step 1: Write the proportion equation
   102,028.30 : 152,893.05 = 91,498.30 : x
2. Step 2: Convert to fraction form
   102,028.30/152,893.05 = 91,498.30/x
3. Step 3: Cross multiply
   102,028.30x = 152,893.05 × 91,498.30
4. Step 4: Simplify right side
   102,028.30x = 13,989,454,156.82
5. Step 5: Solve for x
   x = 13,989,454,156.82/102,028.30
6. Step 6: Final answer
   x = 137,113.47