Finding the Fourth Proportional to 151,699.52, 209,106.96 and 103,870.16

Step by Step Solution

1. Step 1: Write the proportion equation
   151,699.52 : 209,106.96 = 103,870.16 : x
2. Step 2: Convert to fraction form
   151,699.52/209,106.96 = 103,870.16/x
3. Step 3: Cross multiply
   151,699.52x = 209,106.96 × 103,870.16
4. Step 4: Simplify right side
   151,699.52x = 21,719,973,392.31
5. Step 5: Solve for x
   x = 21,719,973,392.31/151,699.52
6. Step 6: Final answer
   x = 143,177.60