Finding the Fourth Proportional to 149,810.76, 206,821.89 and 102,134.16

Step by Step Solution

1. Step 1: Write the proportion equation
   149,810.76 : 206,821.89 = 102,134.16 : x
2. Step 2: Convert to fraction form
   149,810.76/206,821.89 = 102,134.16/x
3. Step 3: Cross multiply
   149,810.76x = 206,821.89 × 102,134.16
4. Step 4: Simplify right side
   149,810.76x = 21,123,580,004.76
5. Step 5: Solve for x
   x = 21,123,580,004.76/149,810.76
6. Step 6: Final answer
   x = 141,001.75