Finding the Fourth Proportional to 111,378,570.48, 153,699,307.92 and 61,142,781.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111,378,570.48 : 153,699,307.92 = 61,142,781.15 : x
2. Step 2: Convert to fraction form
   111,378,570.48/153,699,307.92 = 61,142,781.15/x
3. Step 3: Cross multiply
   111,378,570.48x = 153,699,307.92 × 61,142,781.15
4. Step 4: Simplify right side
   111,378,570.48x = 9,397,603,147,059,020
5. Step 5: Solve for x
   x = 9,397,603,147,059,020/111,378,570.48
6. Step 6: Final answer
   x = 84,375,325.58