Finding the Fourth Proportional to 144,051.30, 215,688.15 and 144,051.30

Step by Step Solution

1. Step 1: Write the proportion equation
   144,051.30 : 215,688.15 = 144,051.30 : x
2. Step 2: Convert to fraction form
   144,051.30/215,688.15 = 144,051.30/x
3. Step 3: Cross multiply
   144,051.30x = 215,688.15 × 144,051.30
4. Step 4: Simplify right side
   144,051.30x = 31,070,158,402.10
5. Step 5: Solve for x
   x = 31,070,158,402.10/144,051.30
6. Step 6: Final answer
   x = 215,688.15