Finding the Fourth Proportional to 99,316.66, 137,059.69 and 53,997.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,316.66 : 137,059.69 = 53,997.69 : x
2. Step 2: Convert to fraction form
   99,316.66/137,059.69 = 53,997.69/x
3. Step 3: Cross multiply
   99,316.66x = 137,059.69 × 53,997.69
4. Step 4: Simplify right side
   99,316.66x = 7,400,905,696.83
5. Step 5: Solve for x
   x = 7,400,905,696.83/99,316.66
6. Step 6: Final answer
   x = 74,518.27