Finding the Fourth Proportional to 99,303,870.08, 137,103,353.28 and 64,037,445.20

Step by Step Solution

1. Step 1: Write the proportion equation
   99,303,870.08 : 137,103,353.28 = 64,037,445.20 : x
2. Step 2: Convert to fraction form
   99,303,870.08/137,103,353.28 = 64,037,445.20/x
3. Step 3: Cross multiply
   99,303,870.08x = 137,103,353.28 × 64,037,445.20
4. Step 4: Simplify right side
   99,303,870.08x = 8,779,748,472,404,241
5. Step 5: Solve for x
   x = 8,779,748,472,404,241/99,303,870.08
6. Step 6: Final answer
   x = 88,412,953.75