Finding the Fourth Proportional to 151,376.50, 208,899.57 and 84,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,376.50 : 208,899.57 = 84,308.50 : x
2. Step 2: Convert to fraction form
   151,376.50/208,899.57 = 84,308.50/x
3. Step 3: Cross multiply
   151,376.50x = 208,899.57 × 84,308.50
4. Step 4: Simplify right side
   151,376.50x = 17,612,009,397.35
5. Step 5: Solve for x
   x = 17,612,009,397.35/151,376.50
6. Step 6: Final answer
   x = 116,345.73