Finding the Fourth Proportional to 103,838,013.80, 143,340,582.72 and 64,699,127.96

Step by Step Solution

1. Step 1: Write the proportion equation
   103,838,013.80 : 143,340,582.72 = 64,699,127.96 : x
2. Step 2: Convert to fraction form
   103,838,013.80/143,340,582.72 = 64,699,127.96/x
3. Step 3: Cross multiply
   103,838,013.80x = 143,340,582.72 × 64,699,127.96
4. Step 4: Simplify right side
   103,838,013.80x = 9,274,010,703,262,244
5. Step 5: Solve for x
   x = 9,274,010,703,262,244/103,838,013.80
6. Step 6: Final answer
   x = 89,312,289.05