Finding the Fourth Proportional to 99,962.10, 149,700.15 and 53,111.70

Step by Step Solution

1. Step 1: Write the proportion equation
   99,962.10 : 149,700.15 = 53,111.70 : x
2. Step 2: Convert to fraction form
   99,962.10/149,700.15 = 53,111.70/x
3. Step 3: Cross multiply
   99,962.10x = 149,700.15 × 53,111.70
4. Step 4: Simplify right side
   99,962.10x = 7,950,829,456.76
5. Step 5: Solve for x
   x = 7,950,829,456.76/99,962.10
6. Step 6: Final answer
   x = 79,538.44