Finding the Fourth Proportional to 99,931,105.42, 137,894,308.63 and 55,269,980.58

Step by Step Solution

1. Step 1: Write the proportion equation
   99,931,105.42 : 137,894,308.63 = 55,269,980.58 : x
2. Step 2: Convert to fraction form
   99,931,105.42/137,894,308.63 = 55,269,980.58/x
3. Step 3: Cross multiply
   99,931,105.42x = 137,894,308.63 × 55,269,980.58
4. Step 4: Simplify right side
   99,931,105.42x = 7,621,415,760,072,626
5. Step 5: Solve for x
   x = 7,621,415,760,072,626/99,931,105.42
6. Step 6: Final answer
   x = 76,266,701.22