Finding the Fourth Proportional to 99,948.51, 149,922.72 and 49,978.32

Step by Step Solution

1. Step 1: Write the proportion equation
   99,948.51 : 149,922.72 = 49,978.32 : x
2. Step 2: Convert to fraction form
   99,948.51/149,922.72 = 49,978.32/x
3. Step 3: Cross multiply
   99,948.51x = 149,922.72 × 49,978.32
4. Step 4: Simplify right side
   99,948.51x = 7,492,885,675.43
5. Step 5: Solve for x
   x = 7,492,885,675.43/99,948.51
6. Step 6: Final answer
   x = 74,967.46