Finding the Fourth Proportional to 99,435,609,709.74, 137,221,196,446.59 and 53,709,884,885.65

Step by Step Solution

1. Step 1: Write the proportion equation
   99,435,609,709.74 : 137,221,196,446.59 = 53,709,884,885.65 : x
2. Step 2: Convert to fraction form
   99,435,609,709.74/137,221,196,446.59 = 53,709,884,885.65/x
3. Step 3: Cross multiply
   99,435,609,709.74x = 137,221,196,446.59 × 53,709,884,885.65
4. Step 4: Simplify right side
   99,435,609,709.74x = 7,370,134,665,018,062,405,632
5. Step 5: Solve for x
   x = 7,370,134,665,018,062,405,632/99,435,609,709.74
6. Step 6: Final answer
   x = 74,119,670,875.78