Finding the Fourth Proportional to 111,147,749.34, 153,386,113.35 and 64,740,992.61

Step by Step Solution

1. Step 1: Write the proportion equation
   111,147,749.34 : 153,386,113.35 = 64,740,992.61 : x
2. Step 2: Convert to fraction form
   111,147,749.34/153,386,113.35 = 64,740,992.61/x
3. Step 3: Cross multiply
   111,147,749.34x = 153,386,113.35 × 64,740,992.61
4. Step 4: Simplify right side
   111,147,749.34x = 9,930,369,230,868,972
5. Step 5: Solve for x
   x = 9,930,369,230,868,972/111,147,749.34
6. Step 6: Final answer
   x = 89,343,862.47