Finding the Fourth Proportional to 99,300.72, 148,932.30 and 51,864.68

Step by Step Solution

1. Step 1: Write the proportion equation
   99,300.72 : 148,932.30 = 51,864.68 : x
2. Step 2: Convert to fraction form
   99,300.72/148,932.30 = 51,864.68/x
3. Step 3: Cross multiply
   99,300.72x = 148,932.30 × 51,864.68
4. Step 4: Simplify right side
   99,300.72x = 7,724,326,081.16
5. Step 5: Solve for x
   x = 7,724,326,081.16/99,300.72
6. Step 6: Final answer
   x = 77,787.21