Finding the Fourth Proportional to 99,978.62, 149,937.63 and 52,568.16

Step by Step Solution

1. Step 1: Write the proportion equation
   99,978.62 : 149,937.63 = 52,568.16 : x
2. Step 2: Convert to fraction form
   99,978.62/149,937.63 = 52,568.16/x
3. Step 3: Cross multiply
   99,978.62x = 149,937.63 × 52,568.16
4. Step 4: Simplify right side
   99,978.62x = 7,881,945,323.86
5. Step 5: Solve for x
   x = 7,881,945,323.86/99,978.62
6. Step 6: Final answer
   x = 78,836.31