Finding the Fourth Proportional to 290,567,372.10, 435,852,632.82 and 86,097,218.82

Step by Step Solution

1. Step 1: Write the proportion equation
   290,567,372.10 : 435,852,632.82 = 86,097,218.82 : x
2. Step 2: Convert to fraction form
   290,567,372.10/435,852,632.82 = 86,097,218.82/x
3. Step 3: Cross multiply
   290,567,372.10x = 435,852,632.82 × 86,097,218.82
4. Step 4: Simplify right side
   290,567,372.10x = 37,525,699,501,176,648
5. Step 5: Solve for x
   x = 37,525,699,501,176,648/290,567,372.10
6. Step 6: Final answer
   x = 129,146,294.82